Western blot. All lanes: Acta1 antibody at 2µg/ml. Lane 1: Mouse brain tissue. Lane 2: Mouse lung tissue. Lane 3: Rat muscle tissue. Lane 4: Zebrafish lysate. Secondary. Goat polyclonal to rabbit IgG at 1/10000 dilution. Predicted band size: 43 kDa. Observed band size: 43 kDa