Figure 4From: Vitamin D regulating TGF-β induced epithelial-mesenchymal transitionMorphological changes induced by TGF-β1, TGF-β2, and Calcitriol. BEAS-2B cells were treated with 0.1% vehicle or 100 nM calcitriol for 24 hours. 10 ng/ml of TGF-β1 or 10 ng/ml of TGF-β2 was added for an additional 48 hours. Pictures were taken with bright field illumination using an Olympus CKX41 microscope.Back to article page