title: Changes in the levels of DNA, RNA, protein and DNases in developing and old chick brain.
mesh_terms: D000375:Aging; D000818:Animals; D001921:Brain / Q000196:embryology / Q000254:growth & development / Q000378:metabolism*; D002642:Chick Embryo; D002645:Chickens; D004247:DNA / Q000378:metabolism*; D003851:Deoxyribonucleases / Q000378:metabolism*; D009419:Nerve Tissue Proteins / Q000378:metabolism*; D012313:RNA / Q000378:metabolism*; D013997:Time Factors
chemical_list: D009419:Nerve Tissue Proteins; D012313:RNA; D004247:DNA; D003851:Deoxyribonucleases