Electroacupuncture alleviates diabetic peripheral neuropathy through modulating mitochondrial biogenesis and suppressing oxidative stress

Figure 4 Representative images of hematoxylin and eosin staining and transmission electron microscopy. A and B: Representative images of hematoxylin and eosin staining. Left, low magnification (× 400). Right, high magnification of the boxed regions on the left; C: Eosin staining and transmission electron microscopy. Blue arrows show duplication of myelin. Yellow arrows show separation of the lamellae. A: Axis cylinder; AA: Axonal atrophy; AS: Axon swelling; D: Demyelination; EA: Electroacupuncture; MS: Medullary sheath; L: Lymphocytic infiltration; SC: Schwann cell.