This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': "True about histology of small intestine is A/E \nSelect and explain. \nA. Zone of replication is in lower half of gland, B. M cells convey microorganism to peyer's patches, C. GALT is absent in lamina propria, D. SIgA provides mucosal immunity", 'role': 'user'}, {'content': "Answer: C \nExplanation: C i.e. GALT is absent in lamina propria- Zone of replication (intestinal stem cell niche) is restricted to lower half of intestinal gland (crypts of Lieberkuhn).- Microfold (M) cells are antigen transpoing cells that convey microorganisms & macromolecules from intestinal lumen to Peyer's patches.- Close entero endocrine cells are resting non secretory cells . Whereas open cells secrete CCK, secretin, GIP, motilin, gastrin & ghrelin hormones.- GALT is prominent in lamina propria of small intestine . Secretory IgA is principle molecule of mucosal immunity", 'role': 'assistant'}]