liver enzyme 46 nonhuman 38 article 36 Liver 34 animal experiment 28 controlled study 26 enzyme activity 24 priority journal 22 Animals 20 Rats 18 animal tissue 18 liver 18 rat 18 Female 14 Male 14 Rats, Wistar 14 animal cell 14 mouse 14 Animal 12 Animalia 12 Hydrogen-Ion Concentration 12 Kinetics 12 Mice 12 Support, Non-U.S. Gov't 12 male 12 animal model 10 female 10 porphobilinogen deaminase 10 porphobilinogen synthase 10 unclassified drug 10