这个词是什么意思？
A multisubunit polycomb protein complex that catalyzes the METHYLATION of chromosomal HISTONE H3. It works in conjunction with POLYCOMB REPRESSIVE COMPLEX 1 to effect EPIGENETIC REPRESSION.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D063151 · MeSH 2026。
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