ARG1 and infection: The proportion of cells and the proportion of ARG-1 expression in corresponding cells exhibited a rising trend along with the extension of infection time, except for fluctuations in SSClowCD11b+F4/80+ and CD11b+CD11c+ cells at 12 months post-infection, whereas the expression of CD3ζ chain in CD4+ and CD8+ T cells showed a descending trend.