Question
A 22-year-old Caucasian female with recurrent abdominal pain and anxiety has had marked improvement in her symptoms after intravenous administration of a heme preparation. Rapid improvement of symptoms in this patient is most likely due to significant repression of:
| A. |
δ-Aminolevulinate synthase |
| B. |
δ-Aminolevulinate dehydratase |
| C. |
Hydroxymethylbilane synthase |
| D. |
Ferrochelatase |
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