Human Embryonic Progenitor (hEP) cells are early downstream derivatives of pluripotent human embryonic stem cells (hESCs). BioTime uses unique and patent-protected PureStem® technology to derive pure cultures of human Embryonic Progenitor (hEP) cells directly from hESCs. The use of human embryonic progenitor cells improves the scalability of highly reproducible, pure, and identified cell types from pluripotent stem cells.