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Images from fluorescence microscope (Olympus CX41) at different magnifications (4×, 10×, 20×) of the constructs printed with an initial concentration of 2 × 106 UMR-106 cells/mL at different time points. Nuclei stained by Hoechst 33342. Scale bar 1 mm (4×), 500 μm (10×), 250 μm (20×).
