title: The clearance of middle size molecules.
mesh_terms: D003037:Cobalt Radioisotopes; D003404:Creatinine / Q000097:blood*; D003973:Diatrizoate / Q000097:blood*; D007457:Iodine Radioisotopes; D008970:Molecular Weight; D006435:Renal Dialysis; D014508:Urea / Q000097:blood*; D014805:Vitamin B 12 / Q000097:blood*
chemical_list: D003037:Cobalt Radioisotopes; D007457:Iodine Radioisotopes; D003973:Diatrizoate; D014508:Urea; D003404:Creatinine; D014805:Vitamin B 12