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. Author manuscript; available in PMC: 2016 Nov 22.
Published in final edited form as: Biofabrication. 2016 Aug 22;8(3):035012. doi: 10.1088/1758-5090/8/3/035012

Figure 1.

Figure 1

Experimental design. (a) Various formulations of gelatin methacrylate (GelMA) hydrogel photocrosslinked with lithium phenyl-2,4,6-trimethylbenzoylphosphinate (LAP) were extruded into different structures (b) at varying travel feed rates, nozzle diameters and extrusion pressures (c). (d) Hydrogels with the same dimensions were prepared, and (e) hydrated unconfined compression testing, a swelling study, and optical microscopy were used to evaluate construct properties for comparison against molded counterparts prepared with the exact same dimensions. Scale bars: 5 mm.