Zebrafish larva. PED6.
Imaging of lipid digestion pathways in zebrafish (Danio rerio) using the fluorogenic phospholipase A2 substrate PED6 (Cat. no. D23739). A zebrafish larva (5 days post-fertilization) was incubated with PED6 for two hours. Localized fluorescence in the gallbladder and intestinal lumen results from endogenous lipase activity and rapid transport of the substrate cleavage products through the intestinal and hepatobiliary systems. The image was provided by Steven A. Farber, Thomas Jefferson University.