The first signal is evoked by the T-cell receptor after engagement with the major histocompatibililty complex-peptide complex expressed on the surface of antigen-presenting cells (APCs).
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美
- 当T细胞受体(T cell receptor TCR)与存在于抗原呈递细胞(antigen presenting cell APC)表面的主要组织相容性复合物(major histocompatibility complex MHC)相结合后，第一信号被激活；
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
