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Cellular uptake of cSCKs in LPS- and γ-IFN-activated RAW 264.7 cells. Confocal microscopic images of (A) cSCKs (40 μg/mL) at different incubation times and (B) 24 h incubation with different concentrations. Flow cytometry studies of (C) cSCKs (40 μg/mL) at different incubation times and (D) 24 h incubation with different concentrations. GMFI (Geometric mean fluorescence intensity).
