The ''chick syncytial virus'' is a virus in the genus ''
Gammaretrovirus
Gammaretrovirus is a genus in the ''Retroviridae'' Family (biology), family. Example species are the murine leukemia virus and the feline leukemia virus. They cause various sarcomas, leukemias and immune deficiencies in mammals, reptiles and bird ...
''.
References
Gammaretroviruses
{{Virus-stub