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

这些结并生长成为寄生虫的未成熟形式，称为。

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

然后， 当这只蚊咬另一个人类时， 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个基因中的仅仅三个，就止成熟和繁殖，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.

每个产生多达30000个成熟的寄生虫细胞， 称为裂殖，这些裂殖会通过血液扩散， 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!

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