amniotic cell of human placenta

例句：

1. 1.The amniotic fluid is crucial for the development of the fetus.
   羊膜液体对胎儿的发展至关重要。
2. 2. Amniotic fluid samples were collected from the mother's uterus during labor.
   在分娩过程中，从母亲的子宫中收集了羊膜液体样本。
3. 3. Researchers have been studying the effects of amniotic fluid on fetal development.
   研究人员一直在研究羊膜液体对胎儿发育的影响。