Figure 2
From: The roles of mesenchymal stem cells in tumor inflammatory microenvironment
Different effects of Naïve MSC (N-MSC) and (Tumor derived MSC (T- MSC) on tumors. Naïve MSCs are ‘educated ‘by the tumor inflammatory microenvironment after homing to tumor tissues and transformation to T-MSCs exert different effects on tumor development. 
Promote 
Inhibit 
Controversial.