Fig. 2

Typical three-dimensional images of endplate on each fiber type from 2-month-old (a, c, e) and 30-month-old (b, d, e) rats. Using software (3D-Doctor), the three-dimensional endplates were reconstructed, and endplate volume, endplate surface area and mean thickness (volume/2D area of endplate) were calculated. White bar indicates 10 μm