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Fig. 6. ABp development. (A) apx-1 mutant embryo showing the lack of body
morphogenesis and the massive pharynx (outlined by arrows) caused by the
hyperinduction of both ABa and ABp descendants to become mesodermal cells. (B)
apx-1;tbx-37 tbx-38 embryo with a small, half-pharynx (small arrows),
a tail, a rectum (large arrow) and a tail spike (inset). (C,D) Ventral views
of wild-type and apx-1; tbx-37 tbx-38 embryos at the onset of
morphogenesis showing ventral hypodermal cells (white arrows) and the nascent
rectum (black arrow). Scale bar: 5 µm.
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