Study of B particles in stomach milk of nursing mice.
D000818:Animals; D000831:Animals, Newborn / Q000378:metabolism*; D001681:Biological Assay; D001942:Breast Feeding; D001943:Breast Neoplasms / Q000209:etiology*; D008324:Mammary Tumor Virus, Mouse / Q000302:isolation & purification*; D051379:Mice; D008892:Milk; D013270:Stomach; D014776:Virus Cultivation