这个词是什么意思？
A macrolide isolated from the culture broth of a strain of Streptomyces tsukubaensis that has strong immunosuppressive activity in vivo and prevents the activation of T-lymphocytes in response to antigenic or mitogenic stimulation in vitro.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D016559 · MeSH 2026。
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