The disease releases toxins into the bloodstream.
这种病会释放毒素到血液中。
When this second group of modified mice were tested alongside ordinary ones , they showed less endurance and had less ability to take up sugar from their bloodstreams .
当这第二组转基因小白鼠与普通小白鼠一同测试后,发现它们的耐力更差,从血液中获取糖分的能力也更低。