Tswj lub cev xeeb tub kom noj qab nyob zoo
- poj niam cev xeeb tub
Koj ua li cas kom cov kua amniotic nyob ib puag ncig tus me nyuam hauv plab?
Cov kua dej nyob ib puag ncig ntawm tus menyuam hauv plab (cov kua dej amniotic) tau tso tawm los ntawm cov placenta, thiab thaum cov placenta nkees nkees lossis dhau los ua calcified thiab kev laus ntxov ntxov ...
Nyeem ntxiv »