Results for interweaving COC 3D microstructures.146 Scale bars are 50 μm. Device photographs (A) prior to and (B) after microfluidic loading of rhodamine B-labeled fluid (pink) and methylene blue-labeled fluid (blue). (C) Fluorescence micrographs of the microvessel structures filled with distinctly labeled fluids. Reproduced from Alsharhan, A. T.; Acevedo, R.; Warren, R.; Sochol, R. D. Lab Chip 2019, 19, 2799-2810 (ref 146), with permission of The Royal Society of Chemistry.