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FIG. 1. Comparison of expression of Xenopus tinman homologues. Tail bud embryos were stained in whole mount for the expression of the three Xenopus tinman homologues (stage 22, A; stage 24, D; stage 27/29, G) along with tadpoles at the linear heart tube stage (stage 30/32, J) and at the onset of chamber formation (stage 38/40, L, M). XNkx2-5 is shown in A, D, G, J, and M; XNkx2-3 in B, E, H, K and N; and XNkx2-10 in C, F, I, and L. In all cases lateral views are shown with anterior to the left. In (D) a black arrow indicates where the XNkx2-5 expression in the endoderm begins to be partially occluded by neural crest. FIG. 2. Comparison of expression of Xenopus tinman homologues. Ventral views of the same embryos depicted in Fig. 1. In all cases anterior is to the left.

Image published in: Sparrow DB et al. (2000)

Copyright © 2000. Image reproduced with permission of the Publisher, Elsevier B. V.

GeneSynonymsSpeciesStage(s)Tissue
nkx2-5.LAR2, csx, Nkx-2.5, nkx-2.5, nkx2-5-a, nkx2-5-b, nkx2.5, tinman, XNkx-2.5, XNkx2-5X. laevisThroughout NF stage 22endoderm
mesoderm
primary heart field
secondary heart field
foregut
nkx2-5.LAR2, csx, Nkx-2.5, nkx-2.5, nkx2-5-a, nkx2-5-b, nkx2.5, tinman, XNkx-2.5, XNkx2-5X. laevisThroughout NF stage 24endoderm
mesoderm
heart
primary heart field
secondary heart field
foregut
pharynx
nkx2-5.LAR2, csx, Nkx-2.5, nkx-2.5, nkx2-5-a, nkx2-5-b, nkx2.5, tinman, XNkx-2.5, XNkx2-5X. laevisSometime during NF stage 27 to NF stage 29 and 30endoderm
mesoderm
primary heart field
secondary heart field
foregut
pharynx
myocardium
nkx2-3.Snkx-2.3, nkx2-3-a, nkx2-3-b, nkx2.3, xnkx-2.3, xnkx2-3X. laevisThroughout NF stage 22endoderm
mesoderm
cardiac mesoderm
secondary heart field
cement gland
nkx2-3.Snkx-2.3, nkx2-3-a, nkx2-3-b, nkx2.3, xnkx-2.3, xnkx2-3X. laevisThroughout NF stage 24endoderm
mesoderm
primary heart field
secondary heart field
foregut
nkx2-3.Snkx-2.3, nkx2-3-a, nkx2-3-b, nkx2.3, xnkx-2.3, xnkx2-3X. laevisSometime during NF stage 27 to NF stage 29 and 30endoderm
mesoderm
heart
cardiac mesoderm
primary heart field
secondary heart field
foregut
myocardium
mouth primordium
eye
brain
pharynx
mesenchyme
nkx2-6.Lnkx2.6, tix, Xnkx2-10X. laevisThroughout NF stage 22endoderm
mesoderm
cardiac mesoderm
nkx2-6.Lnkx2.6, tix, Xnkx2-10X. laevisThroughout NF stage 24endoderm
mesoderm
cardiac mesoderm
primary heart field
secondary heart field
nkx2-6.Lnkx2.6, tix, Xnkx2-10X. laevisSometime during NF stage 27 to NF stage 29 and 30endoderm
mesoderm
heart
cardiac mesoderm
foregut
nkx2-5.LAR2, csx, Nkx-2.5, nkx-2.5, nkx2-5-a, nkx2-5-b, nkx2.5, tinman, XNkx-2.5, XNkx2-5X. laevisSometime during NF stage 29 and 30 to NF stage 32endoderm
mesoderm
heart
primary heart field
secondary heart field
foregut
pharynx
myocardium
nkx2-5.LAR2, csx, Nkx-2.5, nkx-2.5, nkx2-5-a, nkx2-5-b, nkx2.5, tinman, XNkx-2.5, XNkx2-5X. laevisSometime during NF stage 37 and 38 to NF stage 40mesoderm
heart
cardiac mesoderm
outflow tract
ventricular outflow tract
ventral
pharynx
endoderm
nkx2-3.Snkx-2.3, nkx2-3-a, nkx2-3-b, nkx2.3, xnkx-2.3, xnkx2-3X. laevisSometime during NF stage 29 and 30 to NF stage 32endoderm
mesoderm
heart
cardiac mesoderm
primary heart field
secondary heart field
myocardium
pharynx
mesenchyme
mouth primordium
nkx2-3.Snkx-2.3, nkx2-3-a, nkx2-3-b, nkx2.3, xnkx-2.3, xnkx2-3X. laevisSometime during NF stage 37 and 38 to NF stage 40foregut
mouth primordium
pharynx
nkx2-6.Lnkx2.6, tix, Xnkx2-10X. laevisSometime during NF stage 29 and 30 to NF stage 32endoderm
mesoderm
foregut
cement gland

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