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Fig. 2. Expression of prdm1 during embryogenesis. (A-C,F-H) Lateral view,
dorsal to the right. (K-N) Lateral view, anterior to the left. (D,I) Animal
view, dorsal to the bottom. (E,J) Flat mounts, anterior to the left. (C,D,H,I)
Different views of same embryo. (D) Different focal plane in box. (A,B)
prdm1 expression in YSL (arrows) and prechordal plate shortly before
and after onset of gastrulation, compared with gsc expression (F,G).
(C,D) prdm1 expression in prechordal plate, at the boundary of
non-neural and neural ectoderm and slow muscle precursors (adaxial cells) at
the end of gastrulation, compared with hgg1 and dlx3b
expression (H,I). (E) New prdm1 expression in branchial/gill arch
progenitors and otic vesicle at 14 hpf. (J) prdm1 expression in slow
twitching myoblasts and unidentified neuronal cells; trunk and tail are shown.
(K) New prdm1 expression at 24 hpf in pectoral fin buds, dorsal and
ventral fin folds and the cloaca; maintained expression in the hatching gland.
(L,M) New prdm1 expression in the photoreceptor cell layer at 2 dpf.
(N) New prdm1 expression in lateral line organ. Scale bar: 200 µm.
ac, adaxial cells; ba, branchial arch progenitors; cl, cloaca; fb, fin buds;
ff, fin folds; ga, gill arches; hg, hatching gland; ll, lateral line organ;
nc, neuronal cells; ne, neural ectoderm; nne, non-neural ectoderm; ov, otic
vesicle; pf, pectoral fin; pl, photoreceptor cell layer; pp, prechordal plate;
sm, slow twitching myoblasts.
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