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Effect of calcitriol on mRNA expression of extracellular matrix (ECM) proteins. Fetal ASM were treated with vehicle or calcitriol, followed by TNF-α or TGF-β. (A) collagen I, (B) collagen III, and (C) fibronectin mRNA levels were measured by real time PCR. Data are normalized to vehicle control cells and presented as mean ± SEM, n=4 samples, p<0.05. * indicates significant difference from vehicle control
