system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which of the following is a negative stain-
assistant
The correct answer is  list of negative stains: Nigrosin (a black synthetic dye) or India ink (an aqueous suspension of carbon paicles) Phosphotungstic acid is a common negative stain for viruses, nerves, polysaccharides, and other biological tissue materials.