The invasion of a specific type of<unk>  (extravillous<unk>  into the maternal uterus is a vital stage in the establishment of pregnancy. Failure of the<unk>  to invade sufficiently is important in the development of some cases of pre-eclampsia. Invasion of the<unk>  too deeply may cause conditions such as placenta accreta, placenta increta, or placenta percreta. Gestational<unk> ic disease is a pregnancy-associated concept, forming from the villous and extravillous<unk>  cells in the placenta. Choriocarcinoma are<unk> ic tumors that form in the uterus from villous cells.<unk>  stem cells (TSCs) are cells that can regenerate and they are similar to embryonic stem cells (ESCs) in the fact that they come from early on in the<unk>  lifetime. In the placenta, these stem cells are able to differentiate into any<unk>  cell because they are pluripotent.
Trophoblast
Hemangioblast
Nurse cell
Clue cell
Elliptocyte
Echinocyte
Lymphoblast
Neuroblast