5-Aminolevulinate Synthetase 5 aminolevulinate synthase 114 article 114 nonhuman 102 Liver 82 Support, Non-U.S. Gov't 80 Porphyrins 70 animal experiment 68 Animal 62 Heme 62 Male 58 priority journal 56 porphyrin 54 controlled study 52 Rats 50 heme 50 rat 50 Animals 46 liver 46 metabolism 44 Mice 42 male 42 mouse 40 biosynthesis 38 animal tissue 36 Cytochrome P-450 Enzyme System 34 Enzyme Induction 32 animal model 32 enzyme activity 30 heme synthesis 30