Fig. 5.

Effect on T lymphocyte proliferation by SHXB- and STC3-infected immature and mature Mo-DCs and intestinal DCs.

(A) Images 1–4, 5–8 and 9–12 show the number changes of CD3⁺, CD4⁺, and CD8⁺ T cells in the intestinal villi and lamina propria of control piglets, SHXB- and STC3-infected piglets. Scale bars represent 180 nm. (B) Bar graphs show the number of CD3⁺ T cells in the intestinal villus and lamina propria, (C) the CD4⁺ T cells in the intestinal villus and lamina propria, (D) and the CD8⁺ T cells in the intestinal villus and lamina propria by SHXB- and STC3-infected piglets at 15 min, 3 h and 48 h postinfection. Data express the mean ± SEM (n = 5). Bars labelled with different letters are significantly different from each other (P < 0.05).