StemGS? 50X human pluripotent stem cell growth supplement is a medium supplement designed for the optimal growth of human embryonic stem cells and induced pluripotent stem cells in vitro. It is a sterile, concentrated (50X) solution which contains growth factors, hormones, and proteins. The supplement is formulated (quantitatively and qualitatively) to provide an optimally balanced growth environment that maximally promotes the growth of human embryonic stem cells and induced pluripotent stem cells in vitro. Use Geltrex? or BD Matrigel? for feeder-free culture conditions.