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: Microbiology
True about Salmonella typhi infection in intestine are: 
Select and explain. 
A. Affects peyer's patches, B. Common in mesenteric border, C. Erythrophagocytosis is characteristic, D. Strictures are common
A: Affects peyer's patches
Answer: A: Affects peyer's patches 
Explanation: Ans. (a) Affects Peyer's patches Enteric manifestations of S.typhi: S. typhi invades peyer's patches and form oval ulcer with their long axis along the length of bowel (Tuberculosis result in transverse ulcer). Peyer's patches lie along antimesentric border, so ulcer are common in antimesentric border. Stricture is rare but perforation can occur (Stricture are common in TB ulcer). Remember:- Erythrophagocytosis is feature of E. histolytica. Neurologic manifestations of enteric fever: Meningitis * GB syndrome Neuropsychiatric symptoms (described as muttering delirium or coma vigil)