This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genital Tract Infections (Too hot to handle!), Subject name: Gynaecology & Obstetrics
[{'content': "All are true about Doderlein's bacillus, EXCEPT? \nSelect and explain. \nA. Gram positive bacteria, B. Grows in acidic media, C. Conves glycogen into lactic acid, D. Estrogen suppresses growth of this bacillus", 'role': 'user'}, {'content': "Answer: D \nExplanation: Doderlein's bacillus: Rod-shaped gram-positive bacillus which grows anaerobically on acid media, Appears in the vagina 3-4 days after bih and disappears after 10-14 days, Its presence is dependent on estrogen, Function is to conve the glycogen present in the vaginal mucosa into lactic acid so that the vaginal pH is maintained towards acidic side. This acid pH prevents growth of the other pathogenic organisms.", 'role': 'assistant'}]