这个词是什么意思？
A 21-amino acid peptide produced in a variety of tissues including endothelial and vascular smooth-muscle cells, neurons and astrocytes in the central nervous system, and endometrial cells. It acts as a modulator of vasomotor tone, cell proliferation, and hormone production. (N Eng J Med 1995;333(6):356-63)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D019332 · MeSH 2026。
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