placental blood

例句：

1. 1. The mother's placental blood contains antibodies that protect the baby from diseases.
   母亲的胎盘血含有抗体，保护婴儿免受疾病侵害。
2. 2. During pregnancy, the placental blood flow is crucial for the growth and development of the fetus.
   怀孕期间，胎盘血流对于胎儿的生长和发育至关重要。
3. 3. The study found that the placental blood could be used to treat certain types of cancer.
   研究发现，胎盘血可以用于治疗某些类型的癌症。