This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Bacteriology (Gram Positive Bacilli, Gram Negative Bacilli), Subject name: Microbiology
Which of the following stains is not used for C.diphtheriae: 
Select and explain. 
A. Albe's, B. Kinyoun's, C. Ponder's, D. Neisser's
B: Kinyoun's
Answer: B: Kinyoun's 
Explanation: Kinyoun's stain is not used for C.diphtheriae. 1.Stains used for metachromatic granules of Corynebacteria: Albe's, Ponder's, Neisser's Stains. 2. Kinyoun's stain is used for Mycobacterium tuberculosis: Acid fast staining Ziehl-Neelsen staining (hot method). Kinyoun's stain (cold acid fast staining). Gabbett's staining method.