Exogenous bone morphogenetic protein-7 reduces hepatic fibrosis in Schistosoma japonicum-infected mice via transforming growth factor-β/Smad signaling

Figure 4 Representative electrophoretic bands of transforming growth factor-beta 1, alpha-smooth muscle actin, pSmad2, pSmad3 and Smad7 mRNA (reverse transcription-polymerase chain reaction). Numbers 1-3 represent group A, B and C, respectively, at 9 wk; Numbers 4-6 represent group A, B and C, respectively, at 15 wk. The 132 bp glyceraldehyde-3-phosphate dehydrogenase (GAPDH) mRNA fragment was used as an internal control. M: Marker; TGF-β1: Transforming growth factor-beta 1; α-SMA: Alpha-smooth muscle actin.