Figure 1. UV light triggers release of encapsulated molecules in cultured macrophages.
A, Raw264.7 macrophages incubated with fluorescein diacetate-containing nanoparticles (FDA NP) were irradiated with UV light (365 nm, 5 min, 10 mW/cm2). Scale bar = 100 μm. B, Quantification of fluorescence (n= 3 wells, p < 0.001). C. FDA release in phosphate buffer at 37 °C measured by fluorescence upon irradiation (Ex/Em = 490/514 nm).