What are embryonic stem cells? What stages of early embryonic development are important for generating embryonic stem cells?
Embryonic stem cells, as their name suggests, are derived from embryos. Most embryonic stem cells are derived from embryos that develop from eggs that have been fertilized in vitro-in an in vitro fertilization clinic and then donated for research purposes with the informed consent of the donors. They are not derived from eggs fertilized in a woman’s body. Embryonic stem cells are obtained from the inner cell mass of the blastocyst stage of the embryo
