Effects of dietary CGA supplementation on duodenum morphology of LPS-challenged broilers (n = 6). (A) Morphological structure of duodenum of broilers at 4 h, 24 h, and 72 h after LPS injection. (B) Villous height of duodenum intestine. (C) Crypt depth of duodenum intestine. (D) V/C (villous height/crypt depth) ratio of duodenum intestine. Blue, saline; red, LPS; green, CGA; violet, LPS + CGA. Bars without the same letter differed significantly (P < 0.05). Scale bar, 100 µm.