Figure 5

Confocal laser scanning microscope (CLSM) images of Oryzias sinensis intestines after the fish consumed D. magna that were exposed to nano-sized polystyrene (nPS; green emissions). Z-stack images (a) confirmed the presence of nPS in the intestines of O. sinensis, as did merged CLSM images of optical image (b), fluorescent-only image (c), and merged image (d). Scale bar = 200 μm.