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Viability (in %) of U87-MG; BBMVEC, and astrocytes cells after one, four and 8 days of samples incubation, at 5, 10 and 20 nM PTX concentration, respectively. NP(2 P,-): 2 P-decorated, non-loaded; NP(PTX): non-decorated, PTX-loaded; NP(2 P,PTX): 2 P-decorated, PTX-loaded.
