title: In vitro production of murine leukemia virus by cells differing in a single allele.
mesh_terms: D000483:Alleles; D000818:Animals; D002460:Cell Line; D002499:Centrifugation, Density Gradient; D003168:Complement Fixation Tests; D046508:Culture Techniques; D004622:Embryo, Mammalian; D005260:Female; D005333:Fetus / Q000166:cytology; D006579:Heterozygote; D006720:Homozygote; D009052:Leukemia Virus, Murine / Q000254:growth & development*; D008099:Liver / Q000166:cytology; D051379:Mice; D008854:Microscopy, Electron; D010053:Ovary / Q000166:cytology; D010920:Placenta / Q000166:cytology; D011247:Pregnancy; D013154:Spleen / Q000166:cytology; D013950:Thymus Gland / Q000166:cytology; D014316:Tritium; D014599:Uterus / Q000166:cytology
chemical_list: D014316:Tritium