xCdc4 expression overlaps with expression of neural crest and placodal markers. (A-L). Comparison of xCdc4 developmental expression (A,G) with the expression of neural crest and placodal gene markers in the mid-tailbud stages 26/27 (A-F) and 32/33 (H-L). Arrowheads indicate the trigeminal placode; white asterisks indicate branchial arches; red asterisks indicate pharyngeal pouches. Ba1-2, branchial arches 1 and 2; Cg, cranial ganglia; Di/Me, diencephalon and midbrain boundary; E, eye; Ev, ear vesicle; F, forebrain; Ha, hyoid arch; Hg, hatching gland; M, mandibular arch; M*, mandibular crest surrounding the eye; Pr, profundal placode; Tel, telencephalon. Lateral view, anterior left, stages as indicated.