[Changes in the mineral metabolism and nitrogen content in bone tissues in relation to the age of rats].
D000375:Aging; D000818:Animals; D001842:Bone and Bones / Q000737:chemistry*; D008903:Minerals; D009584:Nitrogen / Q000737:chemistry*; D051381:Rats
D008903:Minerals; D009584:Nitrogen
AGING; BONE AND BONES/chemistry; NITROGEN/chemistry