title: Porphyrin precursors in sulfanilamidopyrimidin treatment.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007982:Levulinic Acids / Q000652:urine*; D008297:Male; D011166:Porphyrins / Q000652:urine*; D013424:Sulfanilamides / Q000494:pharmacology*
chemical_list: D007982:Levulinic Acids; D011166:Porphyrins; D013424:Sulfanilamides