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': 'Dienes stain is used for? \nSelect and explain. \nA. Compylobactor, B. Helicobacter, C. Rickettsiae, D. Mycoplasma', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Mycoplasma Dienes method (Dienes staining) - For colonies of mycoplasma. Dienes phenomenon - To eletect swarming of proteus.", 'role': 'assistant'}]