Neuralstem Inc. is focused on developing and commercializing treatments for central nervous system diseases based on transplanting human neural stem cells and small molecule drugs. The company has developed and maintains a portfolio of patents and patent applications that form the base of its research and development efforts in neural stem cell research, small molecule research and related technologies. Neuralstem has also developed and patented a series of small molecule compounds (low molecular weight organic compounds) that can efficiently cross the blood/brain barrier.