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
[{'content': 'A 15 year old girl was admitted to the infectious disease hospital with a provisional diagnosis of rabies. The most suitable clinical sample that can confirm the antemoem diagnosis is- \nSelect and explain. \nA. Serum for anti-rabies IgG antibody, B. Corneal impression smear for immunofluorescence stain, C. CSF sample for viral culture, D. Giemsa stain on smear prepared from salivary secretions', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Diagnosis of rabies The diagnosis of rabies is usually made by the detection of rabies virus antigens by immunofluorescence. The specimens collected are : Antemoem > Corneal smear Skin biopsy from neck or saliva Postmoem Brain biopsy', 'role': 'assistant'}]