Characteristics of Embryonic Stem Cells 1.O1 Derived from pre-implantation or peri-implantation embryo Embryonic stem cells of the inner cell mass are 2. Self-Renewal The cells can divide to make copies of themselves for a pluripotent, having prolonged period of time without differentiating a normal karyotype e maintaining high telomerase activity 3. Pluripotency: Embryonic stem cells can give rise to and exhibiting cells from all three embryonic germ layers even after being grown remarkable long- in culture for a long time term proliferative The three germ layers and one example of a cell type derived from each layer potential Ectoderm Endoderm Neur Blood celis Livr cell Embryonic stem cells of the inner cell mass are pluripotent, having a normal karyotype, maintaining high telomerase activity, and exhibiting remarkable long￾term proliferative potential