title: Studies on mouse sarcoma virus. IV. The isoelectric point of the group-specific antigen.
mesh_terms: D000818:Animals; D002460:Cell Line; D002471:Cell Transformation, Neoplastic; D002499:Centrifugation, Density Gradient; D003168:Complement Fixation Tests; D000939:Epitopes; D017988:Gammaretrovirus / Q000187:drug effects / Q000276:immunology*; D006863:Hydrogen-Ion Concentration; D007525:Isoelectric Focusing; D051379:Mice; D012260:Ribonucleases / Q000494:pharmacology; D014316:Tritium
chemical_list: D000939:Epitopes; D014316:Tritium; D012260:Ribonucleases