Dr.Oduor says in reality, only 1.3 percent of the blood collected is found to be HIV-positive.

VOA: standard.2010.06.04

The red blood cells that carry oxygen only live within your circulation for about a month and so you have to continually be replacing cells that are dying and so there are cells that are proliferating.

携带氧的红细胞,在你的循环系统中的寿命只有一个月,因此你必须持续不断地更新衰老的细胞,所以就有在增殖的细胞

耶鲁公开课 - 生物医学工程探索课程节选

My family,we think of ourselves as vegetarians, right, 'Cause we only surviveon the blood of animals.

VOA: standard.other

In the public health care system, for example, only two hospitals are equipped with dialysis machines, which remove impurities from the blood when the kidneys can not do it.

VOA: standard.2010.05.30