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(a) Schematic for microstrand formation by serial deposition of microbeads and subsequent processing with polymer and calcium chelator. Representative images of chitosan- microstrands, (b) immediately after printing, (c) after chitosan coating and calcium chelation resulting in a continuous strand, (d) 3 days in culture, and (e) 9 days in culture (when cells completely fill strand). Scale bars are 500 μm.
