This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Panton-valentine leucocidin is seen in infection with- 
Select and explain. 
A. Streptococci, B. Staphylococci, C. Gonococci, D. Pneumococci
B: Staphylococci
Answer: B: Staphylococci 
Explanation: Ans. is 'b' i.e., Staphylococci . Staphylococcal leucocidin and gamma lysin have been grouped as synergohymenotropic toxins. Leucocidin is also called as Panton-valentine toxin.