The magnitude and duration of T-cell immune response are critically regulated by the interaction of interleukin-2 (IL-2) and its high-affinity receptor (IL-2R) on the surface of the cell.

白细胞介素2 (IL - 2)与其高亲和力受体(IL - 2r)的相互作用在调节T细胞免疫反应的强度和持续时间方面起着关键作用。

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CCR5 protein coverage in the major T-cell surface, is a receptor protein.

CCR5蛋白质主要覆盖于T细胞表面，是一种蛋白受体。

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So, it doesn't need to bind to a receptor on the surface of the cell in order to work because the molecule can actually enter the cell directly.

所以无需与细胞表面受体相结合来起效,因为这些分子能直接进入细胞

耶鲁公开课 - 生物医学工程探索课程节选