Harvesting and irradiation of mouse embryonic fibroblasts (MEFs) for hPSC cultures v1

This protocol describes the process of harvesting and irradiating mouse embryonic fibroblasts (MEFs) to use as feeder cells for human pluripotent stem cell (hPSC) culture. General notes 1. Throughout this protocol, the term hPSC is used to collectively refer to both hiPSCs and hESCs. All described procedures have been tested and work equally well for hiPSCs and hESCs. 2. MEFs were obtained as described in Manipulating the Mouse Embryo: A Laboratory Manual, Third Edition (ISBN: 0879695919)