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': 'Which organism cannot be cultured in cell free media -a) Klebsiella rhinoscleromatisb) Klebsiella ozaenaec) Treponema pallidumd) Pnemocystis jirovecie) Rhinosporidium seeberi \nSelect and explain. \nA. abd, B. cde, C. bde, D. ade', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Treponema pallidum is an abligate intracellular organism. Thus it cannot be cultivated in cell free medium.\nPneumocystis Jiroveci and Rhinosporidium seeberi can not be cultivated.', 'role': 'assistant'}]