title: What remains of the "middle molecule" hypothesis today?
mesh_terms: D002850:Chromatography, Gel; D002851:Chromatography, High Pressure Liquid; D002852:Chromatography, Ion Exchange; D006801:Humans; D006435:Renal Dialysis; D014118:Toxins, Biological / Q000032:analysis / Q000302:isolation & purification*; D014511:Uremia / Q000097:blood* / Q000209:etiology / Q000628:therapy
chemical_list: D014118:Toxins, Biological; C026865:uremia middle molecule toxins