Figure 1:

PEG-4aNB crosslinking strategy for microgel synthesis using microfluidics. a) Photopolymerization reaction of PEG-4aNB functionalized with RGD and thiol-PEG-FITC using VPM as protease degradable crosslinking agent and LAP as photoinitiator. b) Schematic of microfluidic device used PEG-4aNB microgels preparation. Microgels were crosslinked in the device by applying UV light directly to the microfluidic device (in situ crosslinking) or after collection (post-collection crosslinking).