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. 2020 Dec 26;9(1):16. doi: 10.3390/biomedicines9010016

Figure 1.

Figure 1

Custom made coaxial BioScribe 3D printer developed at TRICEP (A); 3D printer coaxial nozzle that allows for two syringes to be attached (B); Nozzle tip, comprised of an inner and outer orifice for the extrusion of the core and the shell components of the filaments, respectively. The scale bar represents 500 μm (C); Schematic drawing showing the channels inside the nozzle, being the core (red) used to extrude the supporting GelMA, while the shell (blue) is a softer coating of NSC-34 cells encapsulated in ColMA (D).