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Uptake of A549-TMV by LAD2 cells. LAD2 cells were incubated at different time-points with PKH67-A549-TMV. The uptake level of A549-TMV in LAD2 cells was assayed by confocal microscopy (the right panel represents a single cell) (a) or by flow cytometry data (b, c). Flow cytometry data of the effect of cytochalasin D (20 μm) on A549-TMV uptake (d). These results are representative of three independent experiments
