[Studies on metabolic changes of serum iron, serum cholesterol, vitamin B12 and vitamin B6 with age].
D000368:Aged; D000375:Aging; D002784:Cholesterol / Q000097:blood*; D005260:Female; D006801:Humans; D007501:Iron / Q000097:blood*; D008297:Male; D008875:Middle Aged; D011736:Pyridoxine / Q000097:blood*; D014805:Vitamin B 12 / Q000097:blood*
D002784:Cholesterol; D007501:Iron; D011736:Pyridoxine; D014805:Vitamin B 12