Induction of late-stage apoptosis-necrosis in SNU-1 cells by PS particles in 24 h.

Percent apoptotic-necrotic cells after 24 h treatment with 100 μg/mL of 50–5000 nm PS particles. Data compared with respect to surface functionalization (A) or particle size (B). All data represented as mean ± S.D. (n = 4). Statistical difference is denoted as **p<0.01, ***p<0.001, ****p<0.0001, # 100 nm compared to other sizes (p<0.05), + 1000 nm compared to 200 & 500 nm (p<0.01), ns represents no significant difference.

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