Animal 6 Porphyrins 6 Support, Non-U.S. Gov't 6 article 6 liver 6 nonhuman 6 porphyrin synthesis 6 5 aminolevulinate synthase 4 5-Aminolevulinate Synthetase 4 Antineoplastic Agents 4 Busulfan 4 Chick Embryo 4 Cyclophosphamide 4 Fluorouracil 4 Heme 4 Liver 4 animal 4 antineoplastic agent 4 busulfan 4 chick embryo 4 chicken 4 cyclophosphamide 4 drug effect 4 fluorouracil 4 heme 4 metabolism 4 porphyrin 4 Adenocarcinoma 2 Aminolevulinic Acid 2 Aminolevulinic acid 2