title: Certain physical and chemical properties of two murine leukemia viruses.
mesh_terms: D000818:Animals; D002499:Centrifugation, Density Gradient; D003851:Deoxyribonucleases; D017988:Gammaretrovirus / Q000472:pathogenicity*; D051379:Mice; D012260:Ribonucleases; D013696:Temperature
chemical_list: D003851:Deoxyribonucleases; D012260:Ribonucleases