title: Titration of murine leukemia viruses with rat cell line RFL.
abstract: Normal rat embryo cell (RFL) from syncytia after infection with murine leukemia virus. The assay for counting the number of syncytium foci produced in RFL cells is a sensitive method for a direct infectivity assay of murine leukemia virus.
mesh_terms: D000818:Animals; D002459:Cell Fusion; D002460:Cell Line; D007181:Inclusion Bodies, Viral; D008979:Moloney murine leukemia virus / Q000254:growth & development / Q000302:isolation & purification* / Q000528:radiation effects; D051381:Rats; D014466:Ultraviolet Rays; D014776:Virus Cultivation