title: The determination of free erythrocyte porphyrins (FEP) by a semi-automated fluorometric technique.
mesh_terms: D004912:Erythrocytes / Q000032:analysis; D006418:Heme / Q000096:biosynthesis; D006851:Hydrochloric Acid; D007854:Lead / Q000097:blood; D011166:Porphyrins / Q000097:blood*; D011524:Protoporphyrins / Q000096:biosynthesis; D013050:Spectrometry, Fluorescence / Q000295:instrumentation / Q000379:methods*
chemical_list: D011166:Porphyrins; D011524:Protoporphyrins; D007854:Lead; D006418:Heme; D006851:Hydrochloric Acid