Figure 2
From: TGF-β1 increases proliferation of airway smooth muscle cells by phosphorylation of map kinases
TGF-β1 concentration-dependently increased proliferation of ASMCs. Confluent and growth-arrested ASMCs were incubated with various concentrations of TGF-β1 for 24 or 48 hours prior to [3H]-thymidine incorporation assay (A) or cell counting (B). Significant differences were detected at all concentrations of TGF-β1 treatment compared to the untreated control, p < 0.05 to p < 0.0001, n = 4–18.