这个词是什么意思？
An inhibitory B7 antigen that contains V-type and C2 type immunoglobulin domains. It has specificity for the T-CELL receptor PROGRAMMED CELL DEATH 1 PROTEIN and provides negative signals that control and inhibit T-cell responses. It is found at higher than normal levels on tumor cells, suggesting its potential role in TUMOR IMMUNE EVASION.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D060890 · MeSH 2026。
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