These are the cells that directly attack and kill microorganisms.

这些细胞可以直接攻击并杀死微生物。

《柯林斯英汉双解大词典》

The shark preys on whatever it can attack and kill.

鲨鱼捕食一切它可以攻击和杀死的东西。

youdao

And then the patient's own immune system will attack and kill that neuroblastoma cell.

然后患者自身的免疫系统就会攻击并杀死NB的细胞。

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It was an antibody that primes the immune system to attack and kill tumors.

FORBES: Magazine Article

Mr Esseghaier, 30, and Raed Jaser, 35, are charged with conspiracy to carry out an attack and kill people.

BBC: Tunisian held in New York over Canada train bomb plot

In recent years, evidence has built that the immune system can sometimes attack and kill cancer cells--sometimes--but that cancer finds ways to fight back and evade or blunt the attack. (See "Cancer Miracles") For some people with advanced cancer, ipilimumab may be just enough to trigger a full-fledged anti-tumor attack.

FORBES: Health Care