In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.
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Question: Comprehensive review of rasagiline, a second-generation monoamine oxidase inhibitor, for the treatment of Parkinson's disease.

Answer: monoamine oxidase

Question: Design, synthesis and structure-activity relationship of new arginine vasopressin analogues containing proline derivatives in position 2.

Answer: arginine vasopressin

Question: Comprehensive review of rasagiline, a second-generation monoamine oxidase inhibitor, for the treatment of Parkinson's disease.

Answer:
monoamine oxidase