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. Author manuscript; available in PMC: 2011 Apr 27.
Published in final edited form as: Exp Gerontol. 2008 Oct 10;44(4):261–273. doi: 10.1016/j.exger.2008.09.013

Figure 4. Electron microscopy examination of triad organization.

Figure 4

A and B. Samples from young mice taken at 25,000× magnification. Black arrows indicate well-organized triads. C and D. Samples from old mice taken at 25,000× magnification. Black arrows indicated well-organized triads in C. White arrows indicate disorganized triad structures in D. Images are representative of 10 fibers from 5 mice. Calibration bar = 1µm.