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Fig. S9

Bmp receptor expression during pharyngeal arch development. (A–O) Whole mount ISH for bmpr1aa (A, B), bmpr1bb (C, D, O), bmpr1ab (E, F, M), bmpr2a (G, H), bmpr1ba (I, J, N), and bmpr2b (K, L), lateral views, anterior to the left. (P–R) Transverse sections through 24 hpf embryos showing expression of bmpr1ab (P), bmpr1ba (Q), and bmpr1bb (R) in neural crest cells of the pharyngeal arches. Arrowheads indicate ventral restriction of bmpr1ab (P) and bmpr1bb (Q) expression compared with bmpr1ab (R). Abbreviations: e, eye; hb, hindbrain; mhb, mid-hindbrain boundary; nc, notocord; nt, neural tube; pa, pharyngeal arches; s, somites.

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