Transplantation of insulin-producing cells to treat diabetic rats after 90% pancreatectomy

Figure 1 Isolation and identification of umbilical cord mesenchymal stem cells. Cells displayed spindle-shaped, fibroblast-like morphology (A) and they clonally grew and spread at the bottom of a culture dish within the 12^th d (B); Flow cytometric analysis showed that the isolated cells at passage 4 strongly expressed the surface markers of mesenchymal stem cells, such as CD90, CD105 and CD13, but almost no markers of hematopoietic stem cells, such as CD34, CD45 and HLA-DR (C). PE: Phycoerythrin; FITC: Fluorescein isothiocyanate.