Expression patterns of the adrenomedullin receptor (admr), C1qR-like (crl), scavenger receptor class F (scarf1), and retinol binding protein 4 (rbp4) mRNAs. (A-B) admr expression, (C-D) crl expression, (E) scarf1 expression, and (F) rbp4 expression. (A) The 26-hpf stage. admr is localized to endothelial cells of axial, head, and intersegmental vessels. (B) The 52-hpf stage. admr expression is restricted to the main axial vessels, a subset of head vessels, and the common cardinal vein (ccv). (C) The 26-hpf stage. crl is expressed in endothelial cells of axial, head, and intersegmental vessels. (D) The 52-hpf stage. crl is expressed in the common cardinal vein (ccv), the pectoral fin bud vessel (fb), and a subset of head vessels. (E) The 22-somite stage. scarf1 is localized within lateral mesoderm to the presumptive endothelial cell precursors (arrowhead). (F) The 24-hpf stage. rbp4 mRNA is localized to the yolk syncytial layer and several hypochordal cells (arrowheads); higher magnification in the inset.