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Filtration of leukocytes. (a) 10 μm particles focused and filtered through the u-shaped device. The filtration efficiency, defined as fraction of the particles recovered through outlet 2, was 96%. (b) Filtration of leukocytes. The filtration efficiency was 78% (n = 3). The flow rate was 2.2 ml/min (De = 37) in both cases.
