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Fig. 7. Morphological analysis of sciatic nerves. Semi-thin sections of sciatic
nerves of controls (A,B) and mutants (C,D). ß-galactosidase activity
(labelling sensory axons in light blue) was detected in semi-sections, which
were also counterstained with Alcian Blue. In B,D, red arrowheads, red arrows
and black arrows indicate the unmyelinated sensory axons and the myelinated
sensory and motor axons, respectively. The black arrowheads in D indicate the
unsegregated sensory axons of small to large diameter. (E) Electron microscopy
image of a mutant sciatic nerve transverse section on P21. Scale bar: 0.5
µm.