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. 2019 Feb 4;5:2. doi: 10.1186/s41205-019-0039-x

Fig. 3.

Fig. 3

Microneedle masters fabricated using default settings. Microneedle array fabricated using a-c) 50 μm layer thickness, d-f) 25 μm layer thickness, g-h) and 10 μm layer thickness at differing magnifications. Figures c), f), and i) are close-ups of the tips which demonstrate the lack of sharpness which would be required of a needle that could penetrate the skin