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(a) Effect of alginate concentration and syringe pump flow rate on fiber dimensions. (b) Effect of needle dimension on fiber diameter (* p < 0.05, ** p < 0.01, *** p < 0.001). (c–d) Qualitative influences of parameters on microfiber dimensions and morphologies: (c) effects of CaCl2 circuit flow rates and (d) effects of alginate solution flow rates. Scale bar = 500 μm.
