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Effect of Nodal and constitutively active ALK7 (ALK7-ca) on breast cell growth and viability. MDA-MB-231 (A) and MCF-7 (B) were seeded into 6-cm dishes and transfected with control vector (EV), Nodal (N), or ALK7-ca (CA). The number of live and dead cells was determined by trypan blue exclusion at different time points after transfection. Data represent mean ± SEM (n=3 dishes). * P<0.05 vs other groups at the same time point.
