脑细胞和血细胞都是人类细胞的类型。

Brain cells and blood cells are both types of human ___cell.

癌细胞可以通过放射疗法靶向。

A cancer ___cell can be targeted by radiation therapy.

植物细胞有细胞壁，而动物细胞没有。

The plant ___cell has a cell wall that animal cells lack.