Delivering biomolecules to living cells in a spatially defined way in vitro could help us to understand more in vivo processes. Using an aqueous two-phase system enables the formation of patterns at the nanolitre scale that can serve as a confined reagent-delivery system for mammalian cells.
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Healy, K. Cells nourished by nanodrops. Nature Mater 8, 700–702 (2009). https://doi.org/10.1038/nmat2524
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DOI: https://doi.org/10.1038/nmat2524