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(A) Mass spectrum, (B) ion mobility spectrum, and (C) nested mass and mobility spectrum for a tryptic digest bovine serum albumin sample obtained by a long serpentine path TW SLIM module at the optimum conditions: TW speed of 148 m/s, TW amplitude of 30 V, guard bias of 5 V, RF amplitude of 220 Vpp at 650 kHz, and 2.75 mm gap at 3.00 Torr.
