["In vitro" titration of Shope's fibroma virus].
D000818:Animals; D001431:Bacteriological Techniques; D006801:Humans; D007106:Immune Sera; D014412:Tumor Virus Infections / Q000276:immunology*; D014776:Virus Cultivation
D007106:Immune Sera
Titulación "in vitro" del virus del fibroma de Shope.