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 eggs that have been fertilized in vitro-in an in vitro fertilization clinic-and then donated for research purposes with informed consent of the donors. They are not derived from eggs fertilized in a woman’s body.