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. 2024 Nov 6;29:101327. doi: 10.1016/j.mtbio.2024.101327

Fig. 4.

Fig. 4

Fabrication and characterization of PZH MNs. (A) Schematic illustration of the preparation procedures for PZH MNs. (B–D) SEM images of PZH MNs (scale bar: 100 μm and 10 μm). (E) Digital photograph of PZH MNs patch. (F) The micrograph of PZH MNs under bright field. (G) The 3D reconstruction fluorescence image of PZH MNs. (H) A function of the force and distance recorded by a texture analyzer. (I) The fracture forces of various MNs (n = 3). (J) The photograph of mouse back skin after insertion of PZH MNs. (K) Corresponding H&E staining section of inserted rat skin (scale bar: 100 μm). (L) The digital photograph and (M) SEM image of PZH MNs after rat skin insertion for 2 min.