Pluripotent Stem Cells and Reprogramming,Contents, Concept Embryonic Stem Cells Reprogramming,Contents, Concept Embryonic Stem Cells Reprogramming,What are stem cells?, Reproduce itself (self-renewal); Generate one or more differentiated descendant cell types;,Somatic Cell,These cells will differ from one another in significant ways: Methylation Regulatory gene expression X-inactivation Positional information Imprinting status Marker expression,totipotent,pluripotent,multipoten