title: Lack of expressions of endogenous (gs, chick helper factor) and exogenous avian RNA tumor viruses in the MOB-1 and MSB-1 lines derived from Marek's disease lymphomas.
mesh_terms: D000818:Animals; D001354:Avian Leukosis Virus; D002460:Cell Line; D008381:Herpesvirus 2, Gallid; D008223:Lymphoma / Q000382:microbiology* / Q000473:pathology; D008380:Marek Disease / Q000382:microbiology*; D009858:Oncogenic Viruses; D012328:RNA Viruses