Fig. 4. (A) Light microscope image depicting A549 spreading on PDMS 10 : 1 decorated with silica particles. (B) A549 spreading on silica decorated PDMS 40 : 1. F-actin labelled in magenta, nuclei labelled in cyan and silica particle-decorated PDMS (BDP, 420 nm) in green. Scale bar represents 100 μm. (C) Median fluorescence intensity of A549 cultured on silica decorated PDMS showing uptake of Cy5-labelled silica 120 nm and 360 nm exposed for 6 h at 20 μg mL−1. Data expressed as mean + standard error of the mean. Statistical significance determined by one-way ANOVA with Tukey post hoc test for multiple comparisons. *p < 0.05.
