The current investigation investigates the take-up of Polystyrene Microspheres 1μm by 1321N1 human astrocytoma and A549 human lung carcinoma cell lines. In this work we show unexpectedly a correlation of the take-up paces of fluorescently marked carboxylated polystyrene (PS) NPs of various sizes (20, 40 and 100 nm) in two distinctive cell types, keeping the quantity of NPs per unit volume consistent for all sizes.
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