title: Letter: Determinants of serum ribonuclease levels.
mesh_terms: D006801:Humans; D007165:Immunosuppression Therapy; D007668:Kidney / Q000503:physiopathology; D009101:Multiple Myeloma / Q000201:enzymology* / Q000503:physiopathology; D012260:Ribonucleases / Q000097:blood*; D014508:Urea / Q000097:blood
chemical_list: D014508:Urea; D012260:Ribonucleases