There are four types of stem cells
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Depending upon the source, stem cells are of two types:
embryonic stem cells - Embryonic stem cells are pluripotent stem cells derived from the inner cell mass of a blastocyst, an early-stage embryo.
Adult stem cells - Adult stem cells are undifferentiated cells found throughout the body that divide to replenish dying cells and regenerate damaged tissues. Also known as somatic stem cells, they can be found in children, as well as adults.