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. 2021 Dec 8;9:774210. doi: 10.3389/fbioe.2021.774210

FIGURE 4.

FIGURE 4

(A) Photograph of the wearable patch-based glucose sensor with a waterproof band and a sweat collection layer. (B) Photograph of wearable patch-based glucose sensor under deformation. (C) Optical image of disposable patch-based glucose sensor on the human skin with sweat (Lee et al., 2017).