自然杀伤细胞是一类与T细胞和B细胞不同的淋巴细胞，可在未被致敏的情况下破坏外来细胞(如肿瘤细胞)。

Natural killer cells, which are a class of lymphocyte distinct from t cells and B cells, destroy foreign cells (eg, neoplastic cells) even without prior sensitization.

youdao

自然杀伤（NK）细胞是一种外周血淋巴细胞亚群。

Natural killer (NK) cells are a subset of peripheral blood lymphocytes.

youdao

实验发现来源于肿瘤组织的淋巴细胞群(TIL)对自体肿瘤无自然杀伤细胞活性或仅有低效细胞毒性。

The tumor-derived lymphocytes population (TIL) were of no natural killing activity or low cytotoxicity against the autologouS tumors.

youdao

So, the classes of T-cells: macrophages, natural killer cells, these are a class of cells that's particularly important called dendritic cells.

这类T淋巴细胞包括巨噬细胞,自然杀伤细胞等 统称为树突细胞,树突细胞尤为重要

耶鲁公开课 - 生物医学工程探索课程节选