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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 12.

Figure 12.

Analysis of application areas of different microneedle types in issued patents. (i) Delivery vs. diagnosis and (ii) vaccination vs. measuring glucose applications made with (a) solid microneedles, (b) microneedles having a lumen, (c) microneedles having a channel at the side surface.