这个词是什么意思？
A species in the family DELTARETROVIRUS comprising strains of different host species but arising from the same geographic origin. They include HUMAN T-LYMPHOTROPIC VIRUS 1 and SIMIAN T-LYMPHOTROPIC VIRUS 1.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D030261 · MeSH 2026。
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