These combine and grow to become the immature form of the parasite, called a sporozoite.

这些结合并生长成为寄生虫的未成熟形式，称为子孢子。

Then, when that mosquito bites another human, the sporozoites are injected too, and travel to the liver to hunker down, grow, and multiply.

， 当这只蚊子咬另一人类时， 子孢子也会被注入，并前往肝脏潜、生长和繁殖。

Knocking out just three of the 5000 genes in the P. falciparum genome can prevent sporozoites from maturing and reproducing, so they can’t infect the bloodstream.

敲除恶性疟原虫基因组中的5000基因中的仅仅，可以阻止子孢子成熟和繁殖，从而无法感染血液。

Each sporozoite produces as many as 30,000 mature parasite cells called merozoites, which spread through the bloodstream, burrow into red blood cells, and cause a full-blown infection.

每子孢子可以产生多达30000成熟的寄生虫细胞， 称为裂殖子，这些裂殖子会通过血液扩散， 钻入红血细胞， 并引发全面感染。

They infected mosquitoes with the genetically-engineered sporozoites and let them snack on the volunteers’ forearms. And none of the people in the trial developed malaria, so that’s good!

他们让蚊子感染了基因工程改造过的子孢子，并让蚊子叮咬志愿者的前臂。试验中没有人患上疟疾，这很好！