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
Anti-DNase B is used for the diagnosis of 
Select and explain. 
A. Staphylococcus, B. Streptococcus, C. Corynebacterium, D. Neisseria
B: Streptococcus
Answer: B: Streptococcus 
Explanation: Antideoxyribonuclease B ( anti-DNase B): serological test to determine streptococcal infection. Titres higher than 300 are taken as significant. Anti-DNase B and antihyaluronidase test are very useful for retrospective diagnosis of streptococcal pyoderma for which ASO is of much less value.