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Figure S3. Memo is not required for the recruitment of Cdc42 and Rac1 to lamellipodial membrane. SKBR3 cells were processed for immunofluorescence using antibodies against Cdc42, Rac1, and α-tubulin. Rac1 and Cdc42 localized to the membrane in the presence or absence of Memo. Arrowheads indicate plasma membrane. Ctrl, control. Bars, 10 µm.