Fig. 4From: Mesenchymal stem cells enhance the metastasis of 3D-cultured hepatocellular carcinoma cellsGene and protein expression of MMPs in HCCLM3 cells. a Gene expression of MMP2, MMP7, MMP9 and MMP14 in the co-culture and control group. b Gelatin zymography detection of active MMP2 and MMP9 in three independent experiments. c Optical density analysis of active MMP2 expression. *p < 0.05, compared with the control groupBack to article page