Fig. 2From: A TRPV4 mutation caused Charcot-Marie-Tooth disease type 2C with scapuloperoneal muscular atrophy overlap syndrome and scapuloperoneal spinal muscular atrophy in one family: a case report and literature reviewSural nerve pathology of patient 1. Toluidine-stained semithin sections showed severe decreased density of myelinated fibers (A). Regenerating clusters (arrow), pseudo-onion bulbs (arrowhead) can be seen (B). Ultrastructure examination also showed regenerating clusters (C, arrow) and numerous unmyelinated collateral sprouts forming a pseudo-onion bulb (D)Back to article page