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. 2020 May 7;11:461. doi: 10.3389/fphys.2020.00461

FIGURE 1.

FIGURE 1

Representative transmission electron microscopy images for sarcomere organization scoring from 1 to 5. (A) Score of 5 shows sarcomeres with normal structure; (B) score of 4 means mildly altered; (C) score of 3 means further disorganized from a score of 4 but still moderate; (D) score of 2 means severely altered sarcomere structure; and (E) score of 1 means complete absence of sarcomere structure. A = A zone; I = I zone; M = M-line; Z = Z-line. Bar = 1 μm. (Figure reproduced from Velleman et al., 2018. Avian Dis. 62, 28–35).