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Cellular internalization of free and β-cyclodextrin – bound fluorescently labelled paclitaxel. (a) Representative light and fluorescence images of cells incubated within 3 h with substances indicated. (b) Representative flow cytometry fluorescence intensity charts. PTX – free non-bound paclitaxel; HPCD-PTX – Hydroxy propyl β-cyclodextrin-paclitaxel; MeCD-PTX – Methyl β-cyclodextrin-paclitaxel; SBCD-PTX – Sulfobutyl ether β-cyclodextrin-paclitaxel.
