“Human Umbilical Cord Blood Derived Mesenchymal Stem Cells Were Differentiated into Pancreatic Endocrine Cell by Pdx-1 Electrotransfer”. Biomedical Research and Therapy, vol. 1, no. 02, Apr. 2014, pp. 50-56, https://preservation.bmrat.org/index.php/BMRAT/article/view/21.