Milk.
D000418:Albumins; D000818:Animals; D002079:Butter; D002364:Caseins; D002417:Cattle; D002463:Cell Membrane Permeability; D006224:Cricetinae; D005260:Female; D007774:Lactation; D007785:Lactose; D008322:Mammals; D008321:Mammary Glands, Animal / Q000166:cytology*; D051379:Mice; D008854:Microscopy, Electron; D008892:Milk / Q000032:analysis / Q000378:metabolism / Q000502:physiology*; D011247:Pregnancy; D051381:Rats; D013045:Species Specificity
D000418:Albumins; D002364:Caseins; D002079:Butter; D007785:Lactose