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. 2022 Mar 19;20:147. doi: 10.1186/s12951-022-01354-4

Fig. 2.

Fig. 2

Morphology and degradation of GelMA/PEGDA MNs. a Preparation process GelMA MNs. b Physical picture of MNs patch. c, d SEM images of MNs. Scale bar in C: 500 μm, scale bar in D: 100 μm. eg Degradation experiment of MNs (Day 1, Day 3, Day 5), scale bar: 200 μm. hj Partial enlarged view of white box of scale bar: 100 μm