Structure–function analysis using monoclonal antibodies (mAbs), c

Structure–function analysis using monoclonal antibodies (mAbs), chimeric proteins and deletion mutagenesis indicated that all the domains contribute to C3b and C4b binding and functional activities [42], [43], [44] and [45]. Further, our recent domain swapping study with human complement regulators revealed that of the four domains, domain 1 imparts decay of the protease subunit from the C3-convertase and domains HSP inhibitor 2 and 3 recruit factor I for imparting proteolytic inactivation of C3b and C4b [46]. The importance of VCP in VACV pathogenesis was addressed initially in a study using rabbit and guinea

pig intradermal models where it was shown that VACV devoid of VCP produced comparatively smaller

lesions than the wild type virus [36]. More recently, similar experiments were also performed using mice ear pinnae model in complement sufficient and C3−/− mice [38]. Though these studies clearly demonstrated the importance of VCP in pathogenesis, the significance of complement inhibition by VCP as a contributing factor in the pathogenesis based on the individual known functions is still not clear. In the present study, we have generated a panel of mAbs against find more VCP and used them to dissect the regions on VCP that play a role in the complement regulatory activity. We then asked whether VCP could serve as a virulence determinant by targeting complement and if so, which complement regulatory activity of VCP plays a predominant role in virulence in vivo. The vaccinia virus strain Western Reserve (VACV-WR) was a kind gift from Dr. Sekhar Chakrabarti (National Institute of Cholera & Enteric Diseases, Kolkata, India). The virus was cultured Thymidine kinase by infecting African green monkey kidney cells (CV-1) followed by purification on a sucrose gradient. Recombinant VCP (rVCP) and its truncation

mutants (CCP 1–3, CCP 2–4, CCP 1–2, CCP 2–3 and CCP 3–4) were expressed and purified as previously described [42]. The complement proteins C1, C2, C4, C4b and factor I were purchased from Calbiochem (La Jolla, CA), and complement proteins factor H, C3 [42] and C3b [41] were purified as described earlier. Human soluble CR1 (sCR1) was a generous gift from Dr. Henry Marsh (AVANT Immunotherapeutics, Inc., Needham, MA). Cobra venom factor (CVF) was purified from Naja naja kaouthia venom as described earlier with minor modifications [47]. In brief, the lyophilized venom was dissolved in 20 mM sodium phosphate buffer, pH 7.4, loaded onto Source Q column (12 cm × 9.5 cm, GE Healthcare Bio-Sciences) in the same buffer and eluted with a linear salt gradient to 1 M NaCl.

No

37-176/2009 (SR)] “
“The entry and availability

No.

37-176/2009 (SR)] “
“The entry and availability of generic medicines following patent expiration on innovator products have been associated with increased drug accessibility and remarkable healthcare cost savings in several countries.1 However, to ensure a continuous supply and availability of generic medicines, there must be in place enabling policies and complimentary demand-side practices of generic prescribing, generic dispensing and generic awareness.2 These measures foster the uptake of generic medicines and thus create a conductive market environment for an efficient production of generic medicines. Policies and practices related to generic medicines are highly diverse in nature with various policy measures implemented to meet the overall objectives of drug affordability and accessibility, including promoting the domestic industry.3 and 4 These policy measures GSK1120212 purchase are generally classified into supply-side and demand-side policies. However, both policy sides are complementary

and the optimal mix of the two ensure the availability and increased utilization of generic medicines, which in turn promote competition in the pharmaceutical market and a potential reduction in drug costs.1 and 5 On the supply side, generic medicines policies include regulations that assure the efficacy, safety and quality of generic medicines; and regulatory measures that facilitate market entry of SCH772984 solubility dmso generic medicines such as simplified registration procedures and differential registration fees. Others include pharmaceutical pricing policies and the implementation of regulatory exception or “Bolar provision” that allows the development of generic medicines while the innovator’s

product is still under patents, so that generic equivalent can enter the market as PDK4 soon as the innovator’s product patent expires.1 and 2 The demand-side policies largely focus on measures that encourage generic prescription, generic dispensing, generic awareness and generic consumption.1 and 2 In Malaysia, the government has long embraced the promotion of generic medicines usage in order to ensure drug affordability and containment of pharmaceutical expenditure, particularly with the launch of the national essential drugs list (NEDL) in 2000 and the publication of the Malaysia national medicines policy in 2007.6 Section 3.2 of the Malaysian national medicines policy under generic medicines policy aimed to encourage generic production, generic prescribing, generic dispensing, generic substitution and generic use in Malaysia.6 Another regulatory measure related to generic medicines is the incorporation of the regulatory exception provision in the Malaysian patent law, a provision that can potentially facilitate the early entry of generic medicines after patent expiration.

It also depends on the therapist, with 95% of the therapists trea

It also depends on the therapist, with 95% of the therapists treating between 3% and 92% of their patients according to the guideline. The ICC was 39.7% (model 1), indicating that 39.7% of the total variance is PF 2341066 due to the physiotherapist. Table

4 presents the results of the analysis of possible predictors of guideline adherence. It shows that older patients, patients with recurrent complaints, and patients with longer existing complaints are treated according to the guideline less often. Adding the variables on therapist level decreases the ICC to 34%. Together, age, gender, and number of patients treated with ankle injuries explain 21% of the variance at the physiotherapist level. Only experience of the therapist with ankle injuries has a statistically significant relationship with guideline adherence; physiotherapists who treat few patients with ankle injuries follow the recommendations from the guideline less often. The present study demonstrates that adherence to recommendations from the ankle injuries guideline is not achieved very commonly by many physiotherapists. Whether a patient is treated according to the guideline depends to a substantial degree on the therapist. In this sample, 95% of the therapists treated between 3% and 92% of

their patients according to the guideline. In more detail, our data show that for 60–78% of the patients the applied interventions were in line with the guideline. Even so, for a substantial part the interventions and treatments goals were aimed at the improvement of function Selleckchem Veliparib and not mobilityrelated activities, especially in patients with functional instability. Therefore, the use of manual manipulation in this group (21%) is remarkable since this intervention is not advised in the guideline. From Phosphatidylinositol diacylglycerol-lyase previous research it is known that there is variation in adherence to recommendations from practice guidelines. For instance, Bekkering and colleagues (2005) found that in only 20% of the patients the number of treatment sessions was in line with the low back pain guideline, whereas in 91% adequate advice was given. Overall adherence in the trained group of physiotherapists

was 40%. Swinkels and colleagues (2005) showed that in more than 50% of patients with low back pain the recommendations on treatment goals and interventions were followed, but that substantial variation in guideline adherence exists among physiotherapists, a finding that has been confirmed in this study. From previous research based on interviews, it is also suspected that physiotherapists who treat few patients with a certain condition, such as ankle injuries, have more difficulty in using the guideline than physiotherapists who treat these patients more regularly (Fleuren et al 2008). The current study confirms that the more experience physiotherapists have with the specific complaint, the more likely it is the patient will be treated according to the guideline.

For comparison, determinations with Salmonella Typhi were made (9

For comparison, determinations with Salmonella Typhi were made (9 volunteers). Separation of the cells into HR-positive and -negative populations has been described earlier [29], [37] and [40]. Briefly, aliquots of cell suspensions were incubated with monoclonal antibodies to α4β7 (ACT-1, Millennium Pharmaceuticals, Cambridge, MA), l-selectin (Leu-8, Becton Dickinson, Erenbodegem-Aalst, Belgium) or cutaneous lymphocyte antigen (CLA) (HECA-452; received from Sirpa Jalkanen, Finland, originating from Eugene Butcher, California), washed three times, and incubated with Dynal® M-450 magnetic beads coated with sheep this website anti-mouse IgG (Dynabeads, Dynal Biotech,

Oslo, Norway), followed by magnetic separation. Separated cells were immediately studied with the ELISPOT assay. The receptor-positive and -negative cell populations were assayed for antigen-specific ASC using ELISPOT as described selleck previously [20]. In brief, 96-well microtiter plates (Maxisorp, Nunc, Roskilde, Denmark) were coated with a preparation of formalin-killed bacteria. The cells were incubated in the wells for 2 h, and antibodies detected with alkaline phosphatase-conjugated goat anti-human IgA (Sigma–Aldrich, MO, USA), IgG (Sigma–Aldrich) and IgM (SouthernBiotech, Birmingham, England). The substrate (bromo-4-chloro-3-indolyl phosphate p-toluidine salt; Sigma–Aldrich) was added in melted agarose. Each spot enumerated under a light microscope was interpreted as a print

of one ASC. ASC were characterized using medians and ranges. The distribution of the data was tested with Shapiro–Wilk’s test, which showed that the data

were not normally distributed. The differences between groups were tested using Mann–Whitney U-test and Bonferroni’s method was used to correct the p-values. Differences were considered significant when p < 0.05. Statistical analyses were carried out using SAS for Windows, Version 9.2 (SAS Institute Inc., Cary, NC, USA). The proportions of the receptor-positive ASC were calculated from (number of ASC in receptor-positive population)/(sum of the number of ASC in receptor-positive and -negative populations), and expressed as a percentages ±SD. In order to obtain reliable percentages, only measurements with ≥20 ASC were included in the HR analyses. No Salmonella Paratyphi A/B/C- or Salmonella Egusi-specific these ASC were found in the circulation of any of the vaccinees before vaccination ( Fig. 1); one volunteer had 5 Salmonella Typhi-specific ASC/106 PBMC before vaccination. Seven days after vaccination Salmonella Typhi-specific ASC were detected in 30/30 vaccinees ( Fig. 1) and Salmonella Paratyphi A- and B-specific ASC in 28/30 vaccinees; 6/30 vaccinees had a minor response to Salmonella Paratyphi C and none to Salmonella Egusi ( Fig. 1). The medians of the numbers of pathogen-specific ASC and the statistical comparisons are indicated in Table 1. The isotype distributions are indicated in Fig. 2.

Vero cells obtained from WHO (10-87) originally derived

Vero cells obtained from WHO (10-87) originally derived selleck inhibitor from ATCC (CCL-81) were used as host for poliovirus production. Poliovirus seeds [1] Sabin type 1 (LSc 2ab KP2; SO + 3), Sabin type 2 (P712 Ch2ab-KP2; SO + 3) and Sabin type 3 (Lot 457-III-Pfizer; RSO3) were used. Vero cells were cultured in

T-flasks and Hyperflasks (Corning) in VP-SFM (Invitrogen) to expand the cell number. After trypisinization (TrypLE Select; Invitrogen) cells were resuspended in VP-SFM and added to the bioreactor. Different cultivation methods have been applied where Vero cells were grown adherent to microcarriers (3 g L−1 Cytodex 1; GE Healthcare). The cultures were maintained

at pH 7.2, 37 °C, 50% dissolved oxygen (DO) by headspace aeration only (1 L min−1) and sampled at least once a day. Cell cultures were carried out in standard glass stirred-tank type bioreactors, optionally equipped with a spin filter (70 μm) to retain cells on microcarriers in the bioreactor when needed (perfusion and recirculation culture mode). Alternatively, a harvest pipe with a 75 μm sieve was used to remove media while retaining microcarriers. Cultivations were controlled using Sartorius DCU-3 LEE011 nmr control units and MFCS-win software (Sartorius AG, Melsungen, Germany). Batch cultivations were carried out at 4 L working volume with inoculation densities of 0.1 × 106 cells mL−1.

During cultivation, glucose and glutamine were added by bolus feeding to 10 mM glucose and 2 mM glutamine when concentrations were below 5 mM and 0.5 mM respectively. Semi-batch cultivations were essentially performed as described by Mendonça (1998) [8] at 3 L working volume with an inoculation density of 0.1 × 106 cells mL−1. From day two onwards, daily 1 L culture medium (1/3 culture volume) was replaced with fresh medium. Media replacement medroxyprogesterone was done after sedimentation of the microcarriers without agitation. In addition, bolus feeding of glucose and glutamine was done once 4 days after the start of cultivation to obtain concentrations of 20 mM glucose and 2 mM glutamine. Perfusion cultivations were carried out using 1.5 L working volume. Cells were inoculated at 0.1 × 106 cells mL−1 and retained in the bioreactor. After 2 days of batch cultivation, continuous media feed was started at 1.5 L day−1 (1 culture volume per day). Media feed rate was kept constant for the remainder of the perfusion cultures. Recirculation cultures, where cells are retained in the bioreactor (3 L working volume) while medium (15 L total volume = culture volume + circulated volume) is circulated, were carried out essentially as described previously [9]. Cells were inoculated at a cell density of 0.6 × 106 cells mL−1.

A/WSN infectivity was titrated in a focus-forming assay using MDC

A/WSN infectivity was titrated in a focus-forming assay using MDCK cells in 96-well plates in triplicate. Cells were incubated at 33 °C for 18 h, fixed in 4% (v/v) formaldehyde, and blocked with 5% (w/v) milk powder in PBS. Virus-positive cells were detected using a mouse monoclonal antibody specific for the A/WSN haemagglutinin, and a goat anti-mouse IgG–alkaline phosphatase conjugate (Sigma), both in buffered saline containing 0.1%

(v/v) Tween, and finally incubated with an alkaline phosphatase substrate (NBT/BCIP in TMN buffer; Sigma). find more At least 50 stained cells (foci) at an appropriate dilution were counted in each of three wells and averaged to give a titre in focus-forming units (FFU)/lung. Before examining SCID mice we tested the infection parameters of A/WSN in the immune competent Balb/c strain from which they had been derived. Mice inoculated simultaneously with 1.2 μg of active DI virus and infected with A/WSN were either completely protected or suffered only a mild clinical disease of short duration

with slight weight loss (Fig. 1a and b). In contrast mice inoculated simultaneously with the same amount of inactivated DI virus and A/WSN lost 19% of body weight at the peak of infection (Fig. 1a); all became seriously ill but then recovered (Fig. IPI-145 mouse 1b). After recovery mice in all groups remained healthy and continued to gain weight with no untoward signs for the duration of the experiment (19 days). Such mice were immune to rechallenge with high dose A/WSN [18] (data not shown). There was essentially no difference in disease progression between mice inoculated intranasally with A/WSN and mice inoculated with inactivated DI virus + A/WSN (data not shown). SCID mice infected with A/WSN succumbed to a disease similar to that seen Oxygenase in immune-competent Balb/c mice as judged by clinical signs and weight loss from day 3 after infection, progressing to death or to the point at which they had to be euthanized (Fig. 1c and d). The dynamics of disease were very similar in SCID mice inoculated intranasally with 1.2 μg (Fig. 1c and d) or 12 μg (Fig. 1e and f) of inactivated

DI virus + A/WSN. However, mice inoculated with active DI virus + A/WSN remained healthy over this period, showing no clinical signs of disease or weight loss. These data demonstrate that the active DI virus can protect SCID mice against acute disease and that the adaptive immune response plays no significant role over the first few days of the infection. SCID mice which had been protected from influenza by treatment with 1.2 μg of active DI virus all remained well for 9 days, but on day 10 some started to lose weight and show signs of disease (Fig. 1c and d). The mice developed severe respiratory symptoms and continued weight loss and progressed to death or euthanasia (Fig. 1c and d). SCID mice treated with a higher DI dose (12 μg) remained well for 14 days, but started to lose weight and become ill on day 15 (Fig. 1e and f).

Potentially avoidable morbidity and mortality will continue to oc

Potentially avoidable morbidity and mortality will continue to occur. It is timely to consider alternatives to all-or-none public access to new vaccines. Should an individual’s prerogative to take advantage of an approved vaccine not be recognized and encouraged, even in the absence of publicly-funded programs? If so, how might this be accomplished? Canada has had recent experience with

a number of “recommended but unfunded vaccines” (RUVs) and is beginning to recognize an obligation to facilitate vaccine use outside of public programs. Placement of a newly licensed product in the RUV category has doomed some previous vaccines to limited uptake [10], [11] and [12], but improvements may be possible with supportive social changes. This review shares Canadian experiences with RUVs and offers suggestions that might have broad application for increasing public access to unfunded vaccines. Canada has historically been a world leader in quickly EGFR inhibitor adding new vaccines to public programs [13], [14] and [15], but recently, delays of several years have occurred between marketing authorization and public funding of 6 new vaccines. These included pneumococcal and meningococcal conjugates, varicella, zoster, Tdap, and

rotavirus vaccines. Canada resembles Europe in microcosm: while we have a single regulatory authority and central NITAGs [16], each of the 13 provinces and buy PF-01367338 territories that make up the country is individually responsible for immunization program funding and scope. Consequently, vaccines can be supplied to the public in some provinces but not others, for varying periods of time. For example, pneumococcal

and meningococcal C conjugate vaccines were approved for sale in 2001 but were not supplied to children in all provinces until 2005–2006. Rotavirus vaccines were first recommended by the NITAG in 2008 [17] during but only 5 of 10 provinces currently offer funded programs. Zoster vaccine was recommended by the NITAG in 2010 [18] but no province currently supplies it to seniors without cost. Furthermore, there appears to be no movement towards public funding of zoster vaccine, tied to the broader challenges of prioritizing and delivering immunizations for adults. The RUV category is expected to grow as more vaccines are marketed for adults, including alternative formulations of influenza vaccines for seniors. Variability also exists in the scope of funded provincial programs, which often target only a portion of potential beneficiaries, without a catch-up program for others at risk. Human papillomavirus (HPV) vaccines are currently used in limited-scope programs that differ among provinces, with only a subset providing catch-up programs for older girls/women or targeting boys, as recommended in 2012 [19]. Thus a recommendation from Canada’s NITAG to use a new vaccine is no longer synonymous with provision of the vaccine in publicly-funded programs, as it once was.

6 months after injury

and the other 7 at between 2 and 5

6 months after injury

and the other 7 at between 2 and 5 years. At 5 years, the change in KOOS in the early ACL reconstruction group was 42.9 units and the change in the comparison group was 44.9 units (mean difference 2.0 units, 95% CI −8.5 to 4.5 units). There were no between-group differences for any of the KOOS subscales, SF-36, numbers returning to pre-injury activity level (n = 14 in early ACL reconstruction, n = 12 in delayed optional ACL reconstruction group), or radiographic osteoarthritis (n = 9 in early ACL reconstruction group, n = 4 in delayed optional ACL reconstruction group). Conclusion: After rupture of the ACL ligament early ACL reconstruction surgery did not provide better results than providing a program of rehabilitation see more with the option of having delayed surgery. Not all young active adults who rupture their ACL ligament require ACL reconstruction surgery. Identifying the best treatment approach for an acute anterior cruciate ligament (ACL) injury is a holy grail for clinicians and researchers. ACL reconstruction has long been considered the treatment of choice for young, active people

with an ACL injury. Surprisingly there are few randomised studies comparing the efficacy of surgery to other treatments. A recent systematic review suggests one in three people may not return to their previous level of sport after surgery (Ardern et al 2011). In the Frobell study a comprehensive assessment of knee impairments, activities, participation, and Cyclopamine contextual factors was completed. There Rutecarpine was no difference at 5 years between people who had early ACL

reconstruction surgery and those who had rehabilitation with the option of delayed surgery, which echoed earlier positive results from the same cohort when they were assessed at 2 years (Frobell et al 2010). People who never had surgery also did just as well as people who had early or delayed surgery. Therefore, for a young, physically active adult with an acute ACL rupture, structured rehabilitation with the option for delayed surgery may be an appropriate approach, and may help avoid unnecessary surgery without compromising short- to medium-term outcomes. Patients who had early surgery had more stable knees when compared to those who had rehabilitation with or without delayed surgery. Damage to the meniscus, rather than the ACL injury or treatment provided, may be a critical factor in the development of post-traumatic osteoarthritis (Oiestad et al 2009). There may be risk in delaying or avoiding surgery, because there is more chance for an unstable knee to sustain meniscal injury. While no differences were found in radiographic signs of osteoarthritis at 5 years, subtle changes associated with long-term disability and disease may not be visible on X-ray (Chu et al 2010). Five years follow-up may not be long enough to make judgements about the efficacy of operative or non-operative treatment in stalling the progression of osteoarthritis.

Parasitemia was detected through daily blood films starting 7 day

Parasitemia was detected through daily blood films starting 7 days post challenge; volunteers were censored at 30 days post challenge if no parasitemia was detected. Volunteers who developed parasitemia were treated with a standard oral course of chloroquine (total 1500 mg base given in divided doses: 600 mg initially followed by 300 mg at 6, 24 and 48 h) under

direct supervision. For the Phase 1 trial all analyses are presented for the intention to treat (ITT) population which included all subjects who received at least 1 dose of study vaccine. For the Phase 2 trial, safety data are presented for the ITT population and immunogenicity and efficacy data for a modified ITT population, excluding volunteers receiving vaccine subject to temperature deviations (see Section 3.1). Summaries were calculated for the incidence, intensity, and relationship of solicited and unsolicited Bcr-Abl inhibitor AEs (see Supplementary Appendix). The percentage of subjects with seropositive levels of anti-CS antibodies (≥1 μg/mL) was determined. Antibody titers were summarized by GMT with 95% CI. GMT calculations were performed by taking the anti-log of the mean of the log titer transformations. Anti-CS antibody titers of <1 μg/mL were

assigned a value of 0.5 μg/mL for the purpose of GMT calculation. For each vaccine group, anti-TRAP antibody titers were described and GMTs with 95% CI were calculated; no 0 values were found. Descriptive analyses in terms Protein Tyrosine Kinase inhibitor of LP response, expressed as stimulation indices (SI*), and measurements of IFN-γ and IL-5 second secretion in the culture supernatant of the stimulated cells, are shown for the Phase 1 study. Results for ELISPOT assays were described as spot forming cells per million for the Phase 2 study.

Both studies were designed to assess the safety, immunogenicity and efficacy (Phase 2 study only) of each individual vaccination regimen, and not for the support of inter-group comparisons. Only descriptive analysis was planned and the sample size was not statistically computed. Efficacy was assessed by comparison of malaria incidence and time to onset of parasitemia. Fisher’s Exact test was used for the comparison of malaria incidence between the control and each treated group. A Kaplan–Meier analysis was performed on time to onset of parasitemia, testing between the control and the two treatment groups using the log-rank statistic. The study flow for both trials is provided in Fig. 1. In the Phase 1 study, 40 subjects were enrolled and randomized (RTS,S/AS02 N = 10, TRAP/AS02 N = 10, RTS,S + TRAP/AS02 N = 20). The mean age of subjects was 34.3 years (range: 19–48 years), 60% were males and all were Caucasian. In the Phase 2 study, 43 subjects were enrolled (RTS,S + TRAP/AS02 N = 25, TRAP/AS02 N = 10, control N = 8).

Because of the loss of pigs after the OURT88/1 boost, only four p

Because of the loss of pigs after the OURT88/1 boost, only four pigs were subsequently challenged with virulent Uganda

1965. Two of these developed transient pyrexia and low viraemia. Pig 1834 had a temperature at day 6 of 40.3 °C, and the virus genome was detected at 227 copies/ml and virus at 1.75 HAD50/ml; pig 1845 had a temperature at day 7 of 40.6 °C and the virus genome was detected at 633 copies/ml; and virus at 2 HAD50/ml. The other two pigs challenged with virulent Uganda 1965 isolate showed no clinical signs and no virus was detected in blood by qPCR or HAD assay. Five pigs were challenged with Benin 97/1, two pigs (1811, 1844) developed typical ASF (Fig. 3C and D) and were terminated at days 6 and 7 respectively before developing severe disease. The remaining pigs (1809, 1829, 1837) did not develop pyrexia or other ASF clinical signs but occasionally virus genome was detected VX-809 research buy by qPCR at concentrations up to 323 copies/ml but virus was not detected by HAD assay. The two groups of naïve pigs challenged with either virulent Uganda 1965 or Benin 97/1 all developed severe clinical signs of ASF with KRX-0401 order high viraemia (up to 5.37 × 107 genome copies/ml; virus up to 7.25 HAD50), and either died or were terminated within 8 days of challenge (Fig. 3). Post-mortem

examination confirmed severe ASF in these control pigs (see summary in Supplementary Table 2). In the third experiment, 7 immune pigs were

generated and 6 of these were challenged with Benin 97/1. One pig (474) showed pyrexia from 2 weeks after the first immunisation (Supplementary Fig. 1C). This pig was euthanised before the OURT88/1 boost. Post-mortem examination of this pig revealed a dark enlarged spleen characteristic of ASFV infection and Ribonucleotide reductase virus DNA was detected from the spleen and retropharyngeal lymph node (RLN) by qPCR (8790 and 41000 virus genome copies/mg tissue respectively) and by cytopathic effect in cultures of porcine macrophages. HAD was not observed in these cultures, indicating that the replicating virus was non-HAD, as expected for the OURT88/3 isolate. Six pigs each of the immune and non-immune groups were challenged with Benin 97/1. All of the immunised pigs were protected from challenge without showing any clinical signs or development of viraemia (Fig. 2C and D). Low copy numbers of the virus genome were detected by qPCR, but not HAD, in spleen and RLN of pig 55 at the termination of the experiment but not in any other lymphoid tissues and blood in this pig, or in any tissues from the other immunised and challenged pigs. In contrast, high copy numbers of virus genome and of virus were detected in blood (up to 5.62 × 108 virus genome copies/ml; virus up to 8.3 HAD50/ml) and tissues (virus ∼7 HAD50/mg of tissue) were detected from all lymphoid tissues in all of the non-immune pigs challenged (see summary in Supplementary Table 2).