Distribution of gene therapy (IMAGE) Children's Hospital of Philadelphia Caption From the ventral tegmental area (VTA), of the mouse brain, the vector carried genes to other areas along neural pathways. Darker circles represent higher numbers of cells with the transported genes. Credit Children's Hospital of Philadelphia Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.