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Get answers about where stem cells come from, why they're important for understanding and treating disease, and how they are used.
Stem cells originate from two main sources: adult body tissues and embryos. Scientists are also working on ways to develop stem cells from other cells, using genetic “reprogramming”...
Where Do Stem Cells Come From? Embryonic Stem Cells. This is the source that caused so much controversy when stem cells first appeared on the political scene. Embryonic stem cells are derived from blastocysts – human embryos only a few days old, usually the result of IVF (in-vitro fertilization), and donated by IVF patients with informed consent.
Adult stem cells, called somatic stem cells, are derived from a human donor. Hematopoietic stem cells are the most widely known example. Scientists have found somatic stem cells in more tissues than was once imagined, including the brain, skeletal muscle, skin, teeth, heart, gut, liver, ovarian cells, and testis.
Pluripotent, embryonic stem cells originate as inner cell mass (ICM) cells within a blastocyst. These stem cells can become any tissue in the body, excluding a placenta. Only cells from an earlier stage of the embryo, known as the morula, are totipotent, able to become all tissues in the body and the extraembryonic placenta. Human embryonic ...
stem cell, an undifferentiated cell that can divide to produce some offspring cells that continue as stem cells and some cells that are destined to differentiate (become specialized).
Adult stem cells are found in a tissue or organ and can differentiate to yield the specialized cell types of that tissue or organ. Pluripotent stem cells. Early mammalian embryos at the blastocyst stage contain two types of cells – cells of the inner cell mass, and cells of the trophectoderm. The trophectodermal cells contribute to the placenta.
Home / Health Library / Body Systems & Organs / Stem Cells. Stem cells are the only cells in your body that make different cell types, like blood, bone and muscle cells. They also repair damaged tissue. Now, stem cells are essential blood cancer and blood disorder treatments.
Where do stem cells come from? Embryonic stem cells are derived from the inner cell mass of a blastocyst: the fertilized egg, called the zygote, divides and forms two cells; each of these cells divides again, and so on.
Where do stem cells come from? Stem cells are specialized cells derived from two primary sources: embryos and adult tissue. Embryonic stem cells originate from three to five-day-old embryos in the blastocyst stage.