Porphyrinogens Female 22 article 22 Liver 20 Rats 20 rat 20 animal experiment 18 nonhuman 18 porphyria 18 porphyrinogen 18 Carboxy-Lyases 16 Support, Non-U.S. Gov't 16 animal model 16 liver 16 uroporphyrinogen decarboxylase 16 Animal 14 Animals 14 Porphyria 14 Porphyrins 14 Uroporphyrinogen Decarboxylase 14 Hexachlorobenzene 12 female 12 hexachlorobenzene 12 Rats, Wistar 10 porphyrin 10 Male 8 Uroporphyrinogens 8 controlled study 8 decarboxylation 8 enzyme activity 8