Unlike embryonic stem cells, which are defined by their origin (cells from the preimplantation-stage embryo), the origin of adult stem cells in some mature tissues.
Stem cells originate from two main sources: adult body tissues and embryos. Scientists are also working on ways to develop stem cells from.
*Unlike bone marrow and cord blood, Human umbilical cord tissue is a rich source of mesenchymal stem cells. Umbilical cord tissue-derived.
Adult stem cells are undifferentiated cells, found throughout the body after development, that multiply by cell division to replenish dying.
1) From the body itself: Scientists are discovering that many tissues and organs contain a small number of adult stem cells that help maintain them. Adult stem.