CARLSBAD, Calif.--(BUSINESS WIRE)--International Stem Cell Corporation (OTCBB: ISCO) announced today the initiation of a series of preclinical animal studies of neuronal cells derived from ISCO’s proprietary pluripotent stem cells. The studies will evaluate the in vivo safety and tumorigenicity of neuronal cells derived from ISCO’s proprietary human parthenogenetic stem cells (hpSC), as well as their ability to develop into functioning dopaminergic neuron–like cells, a key milestone towards creating a cell-based therapy for Parkinson’s Disease (PD).