title: [Influence of liver extracts, folic acid and vitamin B-12 on the free erythrocytic "protoporphyrin 9" level of normal subjects].
mesh_terms: D045728:Corrinoids; D004912:Erythrocytes / Q000378:metabolism*; D005492:Folic Acid / Q000494:pharmacology*; D006397:Hematinics; D006801:Humans; D008110:Liver Extracts; D011166:Porphyrins / Q000097:blood*; D011524:Protoporphyrins; D014805:Vitamin B 12 / Q000494:pharmacology*; D014815:Vitamins
chemical_list: D045728:Corrinoids; D006397:Hematinics; D008110:Liver Extracts; D011166:Porphyrins; D011524:Protoporphyrins; D014815:Vitamins; D005492:Folic Acid; D014805:Vitamin B 12
keywords: ERYTHROCYTES/metabolism; FOLIC ACID/pharmacology; PORPHYRINS/blood; VITAMIN B 12/pharmacology