Figure 1: Panel a: Motor nerve conduction studies of the median nerve showed temporal dispersion and conduction block. Panel b: Light microscopic findings of sural nerve specimens stained with toluidine blue. Fibers with remyelination were associated with a slight decrease in myelinated fibers. Axonal degeneration with myelin ovoids was not evident. Panel c: Teased nerve analysis showing segmental demyelination. Myelinated fibers with axonal degeneration were not found. Bars a 15 μm, b 30 μm.