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Spatio‐Temporal Control of Cell Coculture Interactions on Surfaces

Coculture control: We report a combined photochemical and electroactive self‐assembled monolayer (SAM)‐based substrate strategy to generate a coculture platform with spatial and temporal control of cell–cell interactions. These dynamic substrates can present a variety of ligands on the surface for biospecific interactions between the ligands and cell surface receptors. Photopatterning enables the ligands to be immobilized in patterns and even gradients.