Murine sarcoma virus (Harvey): characteristics of focus formation in mouse embryo cell cultures, and virus production by hamster tumor cells.
D000818:Animals; D006224:Cricetinae; D046508:Culture Techniques; D017988:Gammaretrovirus / Q000302:isolation & purification*; D006378:Helper Viruses; D051379:Mice; D008979:Moloney murine leukemia virus; D009368:Neoplasm Transplantation; D012513:Sarcoma, Experimental