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. Author manuscript; available in PMC: 2022 Jan 1.
Published in final edited form as: Biomaterials. 2020 Nov 5;267:120491. doi: 10.1016/j.biomaterials.2020.120491

Figure 5.

Figure 5.

Total research papers published on microneedles. i) Number of yearly publications, and their classification based on ii) usage of microneedles, iii) type of microneedles, and iv) testing environment. “Fab./Char.” means fabrication or characterization of microneedles.