title: Dietary protein, life-span, and biochemical variables in female mice.
abstract: The 50% mortality of female C57BL/6J mice fed ad libitum a diet which contained 26% or 4% casein, was 23.5 and 28 mo., respectively. Diet did not markedly affect the age-associated changes in the collagen content of the extractability of collagen of skin. In general, the activities of enzymes based on DNA were low in the restricted animals.
mesh_terms: D000818:Animals; D003094:Collagen / Q000032:analysis; D004247:DNA / Q000096:biosynthesis; D004044:Dietary Proteins / Q000378:metabolism*; D005260:Female; D007668:Kidney / Q000201:enzymology; D008099:Liver / Q000201:enzymology; D008136:Longevity; D051379:Mice; D008810:Mice, Inbred C57BL; D009206:Myocardium / Q000201:enzymology; D012867:Skin / Q000032:analysis
chemical_list: D004044:Dietary Proteins; D003094:Collagen; D004247:DNA