Fig. 4
Fig. 4
TGF-? Pathway Components Are Expressed in the Pharynx during PAA Angioblast Differentiation
(A?L) Left lateral views of indicated TGF-? pathway component expression in 28 hr post-fertilization (hpf) embryos. (A-D) Transcripts encoding the canonical TGF-? receptor paralogs RIa/b and RIIa/b are broadly distributed in the pharyngeal region. (E?G, I, and J) Expression of the indicated TGF-? ligands in the pharynx. (H, K, and L) Double in situ hybridization highlighting overlap of indicated TGF-? pathway component transcripts with transcripts encoding the pharyngeal endodermal pouch marker, nkx2.3. (n = 30?40 embryos per in situ hybridization probe). Scale bars, 200 ?m.