Quantitation of β-synemin, α-dystrobrevin-1 and -2 expression following cardiotoxin injection. The mean relative protein levels were determined for β-synemin, α-dystrobrevin-1 and -2 (n = 9) at each time point by quantifying expression on western blots. The mean relative protein level of β-synemin and α-dystrobrevin-1 on days 1 and 28 were set at 0 and 100%, respectively. α-Dystrobrevin-2 expression at day 1 was not set at 0% because this protein was clearly expressed at that time. For other days, protein levels were calculated by dividing the density of the assayed protein band by the density of the band on day 28 and adjusting the data to a percentage.