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Feline Sarcoma Virus (FSV)

How is this virus formed? de novo as a recombinational event between FeLV-A and host cell proto-oncogenes
How does this virus become infective? It is a v-onc+ and defective so a helper FeLV is required for replication. It is defective because the env gene is lost during recombination. ALL STRAINS causing fibrosarcomas are PSEUDOTYPES
T/F. Solitary fibrosarcomas in old cats (greater than 5 years old) are caused by FeSV. FALSE
Created by: lkollmeier