Verapamil treatment does not improve expression of the remaining sarcoglycan at the plasma membrane. The major sarcoglycan complex of cardiomyocytes is α-, β-, γ-, and δ-sarcoglycan. Antibodies specific to α-sarcoglycan, β-sarcoglycan, and δ-sarcoglycan were used on normal control and γ-sarcoglycan-null mice (gsg−/−) that were treated and untreated with verapamil. Scale bar, 10 μm.