Tumor weight was also significantly lower (0.12 ± 0.03 gr) in mice receiving a single administration of MSCs that were TUS + USCA-transfected with pDNA-PEX compared to TUS + USCA only (0.24 ± 0.03 gr, p < 0.05) or non-treated control cells (0.29 ± 0.07 gr, Fig. 6B). This evidence concerns the gene MMP2 and neoplasm.