This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
Investigation of choice of diphtheria carrier is 
Select and explain. 
A. Throat Swab Culture, B. Gram's stain, C. Albe's stain, D. Zeil Nelson's stain
A: Throat Swab Culture
Answer: A: Throat Swab Culture 
Explanation: One or two swabs from the lesions are collected under vision, using a tongue depressor. Smears stained with methylene blue or one of the special stains (Neisser's or Albes) will show the bacilli with metachromatic granules and in the typical arrangement. Reference: Textbook of Microbiology; Anathanarayan and panicker's; 10th edition; Page no: 242