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. 2022 Feb 21;14(2):465. doi: 10.3390/pharmaceutics14020465

Figure 3.

Figure 3

Scanning electron microscopy (SEM) morphology of the 3D chitosan scaffold after non-thermal, biocompatible plasma (NBP) treatment. The chitosan scaffolds were treated with DBD or soft plasma jet NBP for 3 min and 5 min. Non-treated chitosan was used as control. (af) SEM images showing the morphology of control and DBD-based NBP-treated chitosan scaffold. (go) SEM images showing the morphology of control and soft plasma jet-based NBP-treated chitosan scaffold.