title: Virus particles associated with "nonproducer" Rous sarcoma cells.
mesh_terms: D000818:Animals; D001354:Avian Leukosis Virus; D001358:Avian Sarcoma Viruses; D002642:Chick Embryo; D003168:Complement Fixation Tests; D046508:Culture Techniques; D005347:Fibroblasts; D007181:Inclusion Bodies, Viral; D008854:Microscopy, Electron