Fig. 1. BMP2 induces chemotactic C2C12 cell migration. (A) Representative images of propidium-iodide-stained C2C12 migrated cells are shown on the left. Quantitative analysis of eight random fields from three independent experiments is shown on the right (mean ± s.e.m.; *P<0.001, paired t-test). (B) Wounded C2C12 cell monolayers were allowed to migrate in the presence or absence of 3 nM BMP2 for different times. A quantitative analysis of the invaded area was obtained from three photographed fields obtained in at least four independent experiments and represented as mean ± s.e.m.