title: The synthesis of middle molecular substances in rat tissues: in vitro study.
mesh_terms: D000818:Animals; D002850:Chromatography, Gel; D002852:Chromatography, Ion Exchange; D051381:Rats; D014118:Toxins, Biological / Q000097:blood*; D014511:Uremia / Q000097:blood*
chemical_list: D014118:Toxins, Biological