DFG - Research Center and Cluster of Excellence for Regenerative Therapies Dresden View Institution's Website 1 article published in JoVE Neuroscience Expansion of Embryonic and Adult Neural Stem Cells by In Utero Electroporation or Viral Stereotaxic Injection Benedetta Artegiani*1, Christian Lange*1, Federico Calegari1 1DFG - Research Center and Cluster of Excellence for Regenerative Therapies Dresden, Germany Controlling the expansion of somatic stem cells is a major factor hampering their study and use in therapy. Here we describe a system to temporally control neural stem cells expansion during development and adulthood, which can be used to increase the number of neurons generated in the mouse brain.