What is Embryonic stem cell Embryonic stem cells(es cells)are s pluripotent stem A Epiblast cells derived from ICM Primitive endoderm the inner cell globo mass of a TE Trophectoderm blastocyst, an early-stage pre Early blastocyst Late blastocyst implantation E3.5 E4.5 embryo Nature Reviews Molecular Cell Biology Embryonic stem cells (ES cells) are pluripotent stem cells derived from the inner cell mass of a blastocyst, an early-stage pre￾implantation embryo