Figure 4.

Representative micrographs of CD4⁺ and γδ T-cell distribution at the colonic mucosa of pigs with swine dysentery (a–e). CD4⁺ T cells accumulated in large aggregates in the lamina propria (e) and across the submucosa (a,c). Small numbers of γδ T cells were also found in these LESions (b,d). CD4⁺ T cells were more evenly distributed in the colonic mucosa of control pigs (f).