FIG. 1.

Microfluidic encapsulation of HCT116 colon cancer cells in Extracel hydrogel particles. (a) Experimental image of a flow-focusing microfluidic device used to encapsulate cells in Extracel hydrogel particles (scale bar = 100 μm). Arrows indicate the direction of flow. (b) Image of hydrogel particles with encapsulated cells. Arrows indicate the encapsulated cells in particles (scale bar = 50 μm). Inset: size distribution of particles (calculated from more than 100 particles). (c) Schematics of the rapid oil removal process and cell culture in hydrogel particles.