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. 2021 Nov 1;8(24):2103030. doi: 10.1002/advs.202103030

Figure 6.

Figure 6

Monitoring of the two typical biomarkers (i.e., pH and temperature) in vivo using colorimetric dermal tattoo biosensors. A) T‐shaped dermal tattoo biosensors (left) and simultaneous monitoring of pH and temperature for 4 days in vivo (right). B) The analysis of images in (A) with the Hue values.