The coloration of IPE cells stained by CFSE lasted 4 weeks. There was no leakage of dye from labeled rabbit IPE cells to non-labeled human IPE cells in mixed culture process.

• 流式细胞仪和荧光显微镜观察结果显示,CFSE对IPE细胞染色可持续4周以上,未发生染料渗漏或转染其它细胞,且此浓度的CFSE不影响细胞的性状。