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. Author manuscript; available in PMC: 2016 Jul 1.
Published in final edited form as: Pharm Res. 2015 Jan 16;32(7):2280–2291. doi: 10.1007/s11095-015-1619-0

Fig 3. Endosomal escape mediated by blend particles assessed by acridine orange (AO).

Fig 3

The fluorescent intensity change of AO at 640 nm in DC2.4 cells in the presence of blend particles and polystyrene (PS) particles at different incubation times (a) and particle concentrations (b) and (c). PS-NH2 and PS-COOH indicate the amine-modified and carboxylate-modified polystyrene particles with 200 nm in diameter, respectively. The values are mean ± S.E. Asterisk, dagger and double dagger indicate p < 0.05 with respect to the medium control, PS-COOH and PS-NH2 groups of DC2.4 cell, respectively.