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. 2020 Jul 24;11:3722. doi: 10.1038/s41467-020-17579-6

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© This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply 2020

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Fig. 3 — a 3D rendering of a sarcomere split. Individual colors represent different myofibrillar segments linked by branching sarcomeres. Representative of 1766 splits, 18 muscles, 16 mice. b Frequency of sarcomere splits. c 3D rendering of a transfer of myofilaments from one sarcomere to another. d 3D renderings of a transfer where myofilaments are traded between two sarcomeres. c, d are representative of 525 transfers, 18 muscles, 16 mice. e Frequency of myofilament transfers. f Percentage of myofilament transfers relative to total sarcomere branches. N values for b, e, f: postnatal early—141 myofibrils, 1796 sarcomeres, 3 muscles, 3 mice; postnatal late—150 myofibrils, 1401 sarcomeres, 3 muscles, 3 mice; fast twitch—193 myofibrils, 3477 sarcomeres, 4 muscles, 3 mice; slow twitch—110 myofibrils, 1396 sarcomeres, 3 muscles, 3 mice; cardiac—167 myofibrils, 2114 sarcomeres, 5 muscles, 5 mice. Plus (+): Significantly different (one-way ANOVA, P < 0.05) from postnatal early. Pound sign (#): Significantly different from slow. Up arrow (^): Significantly different from fast. Scale bars, 1 µm. Values: mean ± SE.