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Microfilament-dependent entry pathway of PRRSV-QDs in Marc-145 cells. A Real-time tracking of PRRSV-QDs transported along the microfilaments to the perinuclear region. The right part shows single PRRSV-QDs moving on one microfilament at different time points. B Trajectory of individual PRRSV-QDs in living cells. C Trajectory of individual PRRSV-QDs in living cells treated with 20 μmol/L CytD.
