NK cells kill their target cells by releasing cytotoxic granules in their cytoplasm directly into the target cell.

NK细胞通过释放胞质内的细胞毒颗粒直接进入靶细胞内，来杀死靶细胞。

So how do hormones bind to their target cells?

那么激素是如何与靶细胞结合的呢？

But neither radiation nor chemotherapeutic drugs target only cancer cells.

但放疗和化疗破环的不单单是癌细胞。

Researchers are still developing more precise interventions that only target the intended cancer cells.

研究人员仍在开发更精确的干预措施治疗目标癌细胞。

While the therapy targets malignant cells, it also destroys nearby healthy ones.

虽然治疗的目的是杀死恶性细胞，但它也破坏了附近健康的细胞。

So target cells for those kinds of hormones have receptors for them on the outside of their membranes.

所以这些激素的靶细胞在膜的外面有受体。

In fact, the researchers found that the modified virus actually targeted the tumor cells.

事实上，研究人员发现经过修饰的病毒实际上针对的是肿瘤细胞。

Figuring out how to target these stubborn cells might help prevent cancers from coming back.

弄清楚如何靶向这些顽固细胞可能有助于防止癌症复发。

This type of medicine allows the nanobots to precisely target cancer cells, while leaving healthy cells intact.

这种药物使纳米机器人能够精确地瞄准癌细胞，同时保持健康细胞完好无损。

Once rhinovirus has been introduced to the respiratory mucosa, it targets cell surface receptors expressed at the surface of nasal epithelial cells.

一旦鼻病毒被进入呼吸道粘膜，它的目标是在鼻上皮细胞表面表达的细胞表面受体。