FIG 10.

H&E staining of spleen and mesenteric lymph nodes of weaned piglets. (a) Pathological changes of spleen in three groups of weaned piglets. (b) Pathological changes of mesenteric lymph nodes in three groups of weaned piglets. (The scale of the figures from left to right is 1 mm, 200 μm, 100 μm.) (c) Number of lymph nodes per unit area of spleen in three groups. (d) Average area of splenic lymph nodes in three groups. (e) Number of lymph nodes per unit area of mesenteric lymph node in three groups. (f) Average area of the lymph nodes of the mesenteric lymph nodes in three groups. Repeated five times for each group (n = 5). (*, P < 0.05; **, P < 0.01).