Fig. 4

Ultrastructural analysis. a Representative images from skinned TC muscles for each treatment group. Z-disk misalignment (arrowheads) and rod bodies (arrows, insert) identified in AAV-treated CTRL mice. Black scale bar applicable to all images aside from the insert (white scale bar: 1000 nm). b Characterization of observed nemaline rod bodies. Left: rod body size, right: fractional area in muscle occupied by rod bodies. AAV treatment of Neb cKO mice reduces rod body size. Treatment in CTRL mice results in the formation of new rod bodies. (n = 103–191 rod bodies)