DMD and Duchenne muscular dystrophy: Despite the low level detection of Dp71 in muscle in DMD boys and mdx mice using Wes, endogenous Dp71 cannot be visualized at the sarcolemma.49,50 We also could not detect sarcolemmal dystrophin staining in any DMD human muscle studied from the three isoform groups, in keeping with the notion that DMD patients and mdx mice demonstrate absent C‐terminal dystrophin at the sarcolemma.30