section: Fetal
question: Where do extraembryonic fetal cells originate?
article: Stem cell
candidates: The primitive stem cells located in the organs of fetuses are referred to as fetal stem cells. There are two types of fetal stem cells:  Fetal proper stem cells come from the tissue of the fetus proper, and are generally obtained after an abortion. These stem cells are not immortal but have a high level of division and are multipotent.  Extraembryonic fetal stem cells come from extraembryonic membranes, and are generally not distinguished from adult stem cells. These stem cells are acquired after birth, they are not immortal but have a high level of cell division, and are pluripotent.