Figure 7From: Cytotoxicity and cellular uptake of tri-block copolymer nanoparticles with different size and surface characteristics Effect on cellular ATP content in NR8383 and Caco-2 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