title: Radiolabelled methotrexate: a warning.
mesh_terms: D000818:Animals; D000882:Haplorhini; D006801:Humans; D006900:Hydroxylation; D007553:Isotope Labeling; D007668:Kidney / Q000187:drug effects; D008253:Macaca mulatta; D008727:Methotrexate / Q000031:analogs & derivatives / Q000378:metabolism / Q000633:toxicity*; D011621:Pteridines / Q000378:metabolism; D014316:Tritium
chemical_list: D011621:Pteridines; D014316:Tritium; D008727:Methotrexate