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Previous reports from this group have indicated that the immunoinhibitory programmed death (PD)‐1 receptor and its ligand, PD‐L1, are involved in the mechanism of immune evasion of bovine chronic infection. However, no functional analysis of bovine PD‐L2 in cattle has been reported. Thus, in this study, the molecular function of bovine PD‐L2 was analyzed in vitro. Recombinant PD‐L2 (PD‐L2‐Ig), which...
In the present study, we monitored Foxp3+ T cells in bovine leukemia virus (BLV)‐infected cattle. By flow cytometric analysis, the proportion of Foxp3+CD4+ cells from persistent lymphocytotic cattle was significantly increased compared to control and AL cattle. Interestingly, the proportion of Foxp3+CD4+ cells correlated positively with the increased number of lymphocytes, virus titer and virus load,...
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