This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Which of the following is a negative stain 
Select and explain. 
A. Fontana, B. ZN stain, C. Nigrosin, D. Albe stain
C: Nigrosin
Answer: C: Nigrosin 
Explanation: Negative stain is a technique in which background is stained leaving the actual specimen untouched.and this visible. In contrast with positive staining.the actual specimen is trained..nigeosin and indian ink are negative stains