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
[{'content': 'Amastigote forms are seen in -a) Leishmania donovani b) Toxoplasma gondic) Leishmania majord) Entamoeba \nSelect and explain. \nA. a, B. ac, C. ad, D. b', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Leishmania occurs in two stages\n1. Amastigote (Aflagellar stage)\n\nIn the R.E. system of vertebrate host (Man, dog and hamster)\n\n2. Promastigote (flagellar stage )\na) In gut of sand fly\nb) Artificial culture', 'role': 'assistant'}]