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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.