Fig. 2From: Vitamin D receptor prevents tumour development by regulating the Wnt/β-catenin signalling pathway in human colorectal cancerDetection of cell invasion ability by Transwell experiments. a-c Invasion of SW480 cells using lentivirus-delivered VDR overexpression (b) and VDR interference (c) compared with the controls (a). d and e Invasion of SW480 cells with VDR and β-catenin interference simultaneously (e) compared with the VDR interference plus scramble groups (d). f Quantitative analysis of the migration number of SW480 cells in a to e. The data are presented as means ± SD, n ≥ 3, **P < 0.01Back to article page