Fig. 4From: Xeno-free protocol for GMP-compliant manufacturing of human fetal pancreas-derived mesenchymal stem cellsTumorigenicity assay of FPMSCs in HS- and FBS-supplemented media. A G-banding karyotyping, B soft agar colony formation assay, C tumor formation in nude mice. The white arrows show early colony formation of HEK 293Â T cellsBack to article page