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Interleukin-2 concentration was slightly decreased when RF33.70 cells were coincubated for 24 hours with dendritic cells pulsed with PEI-OVA nanoparticles in the presence of chloroquine or NH4Cl. Data are presented as mean ± standard deviation, n = 4, *P < 0.05, **P < 0.01 versus PEI-OVA nanoparticles group.
Abbreviations: PEI, polyethyleneimine; OVA, ovalbumin.
