K细胞具有IgG Fc受体(FcR),能溶解IgG包裹的细胞,而NK细胞也具有FcR,且能溶解对NK敏感的细胞。加上它们在组织中的分布相似性等特点,从而提示K和NK细胞可能属于同一淋巴细胞群。但也有报导,胰酶和γ球蛋白对NK和K细胞的作用有所不同,但这种差异是否与细胞群活化 K cells have an IgG Fc receptor (FcR) that dissolves IgG-coated cells, while NK cells also have FcR and can lyse NK-sensitive cells. Coupled with their similarities in the distribution of tissues and other characteristics, suggesting that K and NK cells may belong to the same lymphocyte population. However, it has also been reported that trypsin and gamma globulin have different effects on NK and K cells but whether this difference is activated by cell population