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Schematic diagram showing the procedure of printing the nose. The soft ink including the chondrocyte‐laden solution and the stiff ink are both loaded in the printer. Afterward, dual printing is performed on top of the microfabricated sensor functionalized with a TNT‐specific peptide. This hybrid system can be tuned to detect a range of targets such as natural odors, airborne pathogens, and odorless explosives.
