Fig. 2.

Sural nerve biopsy. Semi-thin resin sections from the patient's sural nerve (A) and age-matched control (B), stained with methylene blue azure basic fuchsin (MBA-BF). The nerve fascicles in the patient's biopsy in comparison with the control were of very small size. Image A shows reduced fibre density, small fibre size and complete absence of large normally myelinated fibres across the fascicles. There was no evidence of active axonal degeneration or signs of demyelinating and remyelinating process.There were occasional clusters of regeneration (A, arrow). Scale bar (A and B): 25 $\mu \mathrm{m}$.