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
Selective medium for Gonococci is 
Select and explain. 
A. Thayer - main medium, B. LJ medium, C. DCA medium, D. Macconkey's medium
A: Thayer - main medium
Answer: A: Thayer - main medium 
Explanation: Selective media for gonococci is Thayer - Main media. It contains vancomycin, colistin and nystatin. These antimicrobials will suppress the growth of other organisms which inhibits the growth of Meningococci. Reference: Textbook of Microbiology; Anathanarayan and panicker's; 10th edition; Page no: 231