Zebrafish apolipoprotein genes are expressed in the larval digestive system. In situ hybridization reveals expression of 10 of the 11 zebrafish apolipoprotein genes in the apoB, apoA-IV, apoE, and apoA-I families in the liver and/or intestine of the 6 dpf larva. Dissected intestines probed for apoA-Ia are shown, and the gut of a larva probed for apoA-1b is magnified below the image of the whole larva. L, liver, I, intestine. Adapted and reprinted from Ref. (13), Figures 2–5, under a CC-BY license.