Localized and Sustained Delivery of Erythropoietin from PLGA Microspheres Promotes Functional Recovery and Nerve Regeneration in Peripheral Nerve Injury

Figure 4

Modified Bielschowsky silver staining. 8 weeks after surgery, sciatic nerve tissues were stained with modified Bielschowsky silver method. The axon density, axon diameter, and myelin thickness were determined and compared between different groups (NS indicates not significant; indicates ; indicates ).