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Cross section of the right sciatic nerve seven days after administration of saline, 0.25% bupivacaine hydrochloride (BHCl) and 1.3% liposome bupivacaine (LB) at the sciatic nerve in streptozotocin (STZ)-induced diabetic (a, e, i) and nondiabetic mice (c, g, k). Untreated nerve from the left leg served as controls (b, f, j, d, h, l). Staining with toluidine blue. Bar – 50 µm
