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Representative blots (A) and normalized bar graphs (B) of BMPRII, ActRIIa, ActRIIb, ALK2, BMPRIa and BMPRIb protein as detected by Western blotting in PASMCs treated with 50 ng/ml BMP4 for 60 h. Bar graph shows mean protein expression for BMPRII, ActRIIa, ActRIIb, ALK2, BMPRIa and BMPRIb protein relative to α-actin (n = 4 in each group; *P <0.05 vs. vehicle control). Bar values are as means ± SEM.
