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. 1999 Dec 27;147(7):1473–1480. doi: 10.1083/jcb.147.7.1473

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© 1999 The Rockefeller University Press

This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/).

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Abnormal triad junctions in MG29-deficient skeletal muscle. The triad junctions and SR in hind limb muscles from 8-wk-old wild-type (A) and MG29-deficient (B and C) mice are shown. The tubular network of the SR is well-developed in wild-type muscle cells, whereas the vacuolar SR shown in B and simple tubular SR shown in C are frequently observed in mutant muscle cells. Insets show a cross section of the triad junction. Arrows and arrowheads indicate the triad junctions and M bands, respectively. Bars: 0.5 μm (A); 0.1 μm (inset).