title: Strain-specific mammary tumor virus activity in blood of C3H and BALB-c f. C3H mice.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001769:Blood; D005260:Female; D007774:Lactation; D008297:Male; D008325:Mammary Neoplasms, Experimental; D008324:Mammary Tumor Virus, Mouse; D051379:Mice; D011247:Pregnancy; D011270:Pregnancy, Animal