title: The proportion of ribosomes active in protein synthesis and the content of polyribosomal poly(A)-containing RNA in adult and senescent rat livers.
abstract: The proportion of ribosomes active in protein synthesis and the content of polyribosomal poly(A)-containing RNA are unchanged when adult and senescent rat livers are compared. Therefore, the decreased protein synthesizing activity of senescent liver microsomes observed previously is not due to a deficiency in total mRNA content.
mesh_terms: D000375:Aging; D000818:Animals; D002499:Centrifugation, Density Gradient; D005260:Female; D008099:Liver / Q000378:metabolism*; D011061:Poly A / Q000378:metabolism*; D011132:Polyribosomes / Q000378:metabolism*; D011506:Proteins / Q000378:metabolism*; D012313:RNA / Q000378:metabolism*; D012333:RNA, Messenger / Q000378:metabolism; D051381:Rats; D012270:Ribosomes / Q000378:metabolism*
chemical_list: D011506:Proteins; D012333:RNA, Messenger; D011061:Poly A; D012313:RNA