Fig. 1. Myelinated fiber density (MFD) of the rapidly progressing and nonprogressing diabetic patients.

(A): The nonprogressing dataset shows a no change in MFD (fibers/mm2) over 52 weeks, while the progressing dataset shows a highly significant decrease in MFD. Baseline measurements of triglyceride levels (B) and peroneal motor nerve conduction velocity (C) are significantly different between the progressing and nonprogressing participants. *P < 0.05; ** P < 0.01; *** P < 0.0001. (reproduced from (Wiggin, et al., 2009b)).