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': 'Staining method used for mycoplasma ? \nSelect and explain. \nA. Fontona method, B. Laviditti method, C. Dienes method, D. None', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Dienes method Colonies of mycoplasma may be seen with a hand lens but are best studied after staining by Dienes method. For this, a block of agar containing the colony is cut and placed on a slide. It is covered with a cover slip on which an alcoholic solution of methylene blue and azure has been dried", 'role': 'assistant'}]