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Effects of EA administration on the villus structure in piglets infected with PEDV. (A) H&E staining. Scale bar: 100 nm; Villus height (B, F, J), crypt depth (C, G, K), villus height/crypt depth (D, H, L), and villus surface area (E, I, M). Data are presented as means ± SEMs (n = 10). *P < 0.05, **P < 0.01. Black arrows show the atrophy or shedding of intestinal villi.
