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Fig. 4 Gene expression patterns of enigma homologue variants encoding the PDZ domain. Expression results of whole-mount in situ hybridization are shown for the eight stages indicated. A-D,F,H-K: Additionally, for embryos between cleavage and end of gastrulation (A-D), we present lateral views of embryos at prim-6, prim-22, and long-pec stages in F,H,J,K and a dorsal view of an embryo at the long-pec stage in I. E: The dorsal view of the head of an embryo at stage prim-6 is shown at higher magnification. In G, we present a frontal view of the long-pec stage. am, adductus mandibulae; ba, branchial arches; cm, cephalic musculature; di, diencephalon; dv, diencephalic vein; fp, floor plate; hb, hindbrain; imp, intermandibularis posterior; int, intestine; mb, midbrain; ls, lens; mn, motor neurons; pf, pectoral fin buds; pcl, proliferative cell layer; tct, tectum; tgm, tegmentum.