This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
One of the following is not a cultivable virus - 
Select and explain. 
A. Papova, B. Parvovirus B-19, C. Herpes, D. Adenovirus
B: Parvovirus B-19
Answer: B: Parvovirus B-19 
Explanation: parvoviruses are very small viruses with a single strand3d genome.they need a helper virus or are totalky dependant on the host virus for replication. REF:ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:554