title: [Demonstration of the milk factor in the PS strain of mice by ultracentrifugation on Ficoll gradients. Association of the viral particles with mycoplasma].
mesh_terms: D000818:Animals; D008324:Mammary Tumor Virus, Mouse / Q000302:isolation & purification*; D051379:Mice; D008892:Milk / Q000382:microbiology*; D009174:Mycoplasma / Q000302:isolation & purification*; D011134:Polysaccharides; D014461:Ultracentrifugation
chemical_list: D011134:Polysaccharides
vernacular_title: Mise en évidence du facteur lacté de la souche de souris PS par ultracentrifugation sur gradients de Ficoll. Association des particules virales avec des mycoplasmes.