Fig. 4From: Nanomicelles potentiate histone deacetylase inhibitor efficacy in vitroPI nanomicelle uptake by HeLa cells. Confocal images were taken at 4Â h, 24Â h, and 48Â h after the treatment. A negative control with unstained cells and a positive control involving the addition of Triton-X followed by PI were used. Cell nuclei are stained in blue, while PI fluorescent signal is highlighted in redBack to article page