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Morphological changes pf PTEN-P2 cells after exposure to plumbagin-loaded nanoemulsions. Bright-field microscopy images show untreated control (a) and cells exposed for 24 h to free plumbagin (4 μmol/l) (b), empty nanoemulsion (c), and plumbagin-loaded (4 μmol/l) nanoemulsion formulation (d).
