This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cryptocococcus, Subject name: Microbiology
Cryptococcus neoformans is visualized by? 
Select and explain. 
A. India ink preparation, B. Giemsa stain, C. Grams stain, D. Acid fast stain
A: India ink preparation
Answer: A: India ink preparation 
Explanation: ANSWER: (A) India ink preparationREF: Harrisons 18th ed chapter 202Visualization of the capsule of fungal cells in cerebrospinal fluid (CSF) mixed with india ink is a useful rapid diagnostic technique. Cryptococcal cells in India ink have a distinctive appearance because their capsules exclude ink particles