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
Staining method used for mycoplasma ? 
Select and explain. 
A. Fontona method, B. Laviditti method, C. Dienes method, D. None
C: Dienes method
Answer: C: Dienes method 
Explanation: 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