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. 2024 Jun 17;11(30):2309509. doi: 10.1002/advs.202309509

Figure 1.

Figure 1

Design of dermal tattoos containing responsive bacteria‐filled microgels. Microgels containing a range of engineered bacteria with different biophysical and biochemical stimuli responses (temperature and small molecule activation) were produced using droplet microfluidics. The microgels were then tattooed into a skin mimic using a commercial tattoo gun where the embedded bacteria could respond to cues within the tattooed region.