Figure 1
From: Publisher Correction: Guiding cell migration in 3D with high-resolution photografting

Schematic illustration of the DSSA multi-photon photografting process. (a) The UV-crosslinked gel-MA hydrogel pellet is soaked in a DSSA solution for 24 h. (b) Upon laser irradiation the azido group is group is photochemically decomposed into reactive nitrenes, (c) which covalently bind to C–H groups of gel-MA.