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Differential translocation kinetics hold for multiple γ-subunit types expressed in the same cell. (A) Confocal images of a HeLa cell expressing both YFP-γ9 and mCherry-γ3, showing differential translocation on activation of endogenous CXCR4 receptors with 100 ng/mL SDF-1α. (B) Corresponding translocation kinetics. Data are plotted as the mean (±SD) for n = 8 cells. Agonist addition corresponds to t = 0 s. (Scale bar: 10 μm.)
