Protein-based membranes can cope with water fluxes much higher than those that can be handled by commercial membranes with similar rejection properties.
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Bakajin, O., Noy, A. Proteins make for finer filters. Nature Nanotech 4, 345–346 (2009). https://doi.org/10.1038/nnano.2009.133
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DOI: https://doi.org/10.1038/nnano.2009.133