[Retracted] Preparation of Drug Sustained-Release Scaffold with De-Epithelized Human Amniotic Epithelial Cells and Thiolated Chitosan Nanocarriers and Its Repair Effect on Spinal Cord Injury

Figure 1

Preparation of thiolated chitosan. (a) Sulfhydryl content in thiolated chitosan and chitosan,  < 0.001; (b) SEM image of thiolated chitosan.

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