Collagen content of ovary and testis of rats durinb ageing.
D000375:Aging; D000818:Animals; D003094:Collagen / Q000032:analysis*; D005260:Female; D005298:Fertility; D006909:Hydroxyproline / Q000032:analysis*; D008297:Male; D010053:Ovary / Q000032:analysis*; D051381:Rats; D013737:Testis / Q000032:analysis*
D003094:Collagen; D006909:Hydroxyproline