Fig. 3From: Lack of tumorigenesis and protumorigenic activity of human umbilical cord mesenchymal stem cells in NOD SCID miceChanges in tumor volume in each HeLa group. There were no significant differences between the low-, medium- and high-dose hUC-MSC groups and the model group. This result indicated that low, medium and high doses of hUC-MSCs did not significantly promote or inhibit the growth and metastasis of HeLa cell-derived tumorsBack to article page