TGFB2 and hepatocellular carcinoma: HUVEC-12: human umbilical vein endothelial cells; EndMT: endothelial-mesenchymal transition; LEC: lens epithelial cell; TGF-β2: transforming growth factor-beta2; MiR-21: microRNA-21; HK-2: human kidney 2; Ang II: angiotensin II; LX-2: human hepatic stellate cells; HSC: hepatic stellar cells; HCC: hepatocellular carcinoma; VSMC: vascular smooth muscle cells.