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(a) Sequence showing low pass experiment. Cells are trapped at F1 and the DEP force is off when collection is activated. (b) Sequence showing a band pass experiment. Cells are first trapped at F2 trapping also cells that would trap at F1 (false color green). During collection DEP at F1 is active allowing only cells that trap between F1 and F2 to be collected (only false color green cells remain).
