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Live/dead fluorescence images (10× magnification) of (a) 3/4 Alg/Gel and (b) 3/7 Alg/Gel bioinks measured immediately after extrusion. Blue color represents all cells, alive and dead, stained with Hoechst 33342, and red color represents propidium-iodide-stained dead cells. The scale in both figures is 300 µm.
