Figure 3From: Effect of enriched housing on levels of natural (auto-)antibodies in pigs co-infected with porcine reproductive and respiratory syndrome virus (PRRSV) and Actinobacillus pleuropneumoniae The correlation between viral clearance and NA(A)b. The correlation between the changes of MBP-IgM from day 44 to day 52 and the reduction of viral RNA from day 48 to day 52 for barren and enriched pigs infected with PRRSV.Back to article page