Endocytosis, Distribution, and Exocytosis of Polystyrene Nanoparticles in Human Lung Cells.

As shown in Figure 3 a,d, and Figure S7a,d , the content of R100PS in both kinds of cells and that of G50PS in BEAS-2B cells displayed an increasing trend without reaching saturation within 24 h, while that of G50PS in A549 reached saturation at 12 h ( Figure 3 a and Figure S7a ).

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