BAX concentrations in SNU-1 cells after treatment with particles.

<p>Cells were treated with 100 μg/mL of 50–5000 nm PS particles for 4 h. Human BAX concentrations in the cellular lysates were determined and normalized to protein content. 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<0.05, **p<0.01, ***p<0.001, ****p<0.0001 while ns represents no significant difference.</p> <p>(TIF)</p>