[On the normal urine level of porphyrin precursors].
D000818:Animals; D006801:Humans; D007855:Lead Poisoning / Q000175:diagnosis; D007982:Levulinic Acids; D011164:Porphyrias / Q000175:diagnosis; D011166:Porphyrins / Q000652:urine*; D051381:Rats
D007982:Levulinic Acids; D011166:Porphyrins
O normal'nom soderzhanii v moche predshestvennikov porfirinov.