TGFB1 and bladder transitional cell carcinoma: First, the migration, invasion, and wound filling assays of T24 cells indicated that TGF-β could significantly increase the invasion ability of BLCA cells (Fig. 8B and Additional file 10: Figure S10A), and the cell viability assay suggested that TGF-β had little effect on the growth of T24 cells (Additional file 10: Figure S10B).