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The effect of process parameters on the width of the EHD-bioprinted filaments. (A-E) The morphology and width of the core and sheath lines in the filaments as alginate feeding rate changed from 1500 μL/h to 3000 μL/h. (D-G) The morphology and width of the core and sheath lines in the filaments as collagen solution changed from 400 μL/h to 700 μL/h. (K-O) The morphology and width of the core and sheath lines in the filaments as moving speed changed from 2 mm/s to 8 mm/s.
