Figure 6From: Cytotoxicity and cellular uptake of tri-block copolymer nanoparticles with different size and surface characteristics Mitochondrial membrane potential (ΔΨ m ) of NR8383 and Caco-2 cells after 24 h exposure to different PNP 45 (Δ) and PNP 90 (▲) as % of negative control (0 μg/l). The * sign signifies p < 0.05 compared to negative control (0 μg/ml). The “†” sign signifies p < 0.05 when compared between the PNP45 and PNP90.Back to article page