The basic way you think about it is, preclinical studies, animals, understanding it, purity, reproducibility.

你考虑它的基本方式是，临床前研究，动物，理解它，纯度，再现性。

If they do indeed outlive conventionally transfused cells, as the researchers hope and preclinical studies suggest they will, then recipients will not need such frequent transfusions.

如果真的像研究人员希望以及临床前研究表明的那样，人造红细胞确实比常规输血中输入的细胞存活时间更长，那么接受者就可以减少输血频率。