这个词是什么意思？
A subtype of INFLUENZA A VIRUS comprised of the surface proteins hemagglutinin 2 and neuraminidase 2. The H2N2 subtype was responsible for the Asian flu pandemic of 1957.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D053121 · MeSH 2026。
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