Sequence and expression of FoxB2 (XFD-5) and FoxI1c (XFD-10) in Xenopus embryogenesis - PubMed (original) (raw)
Sequence and expression of FoxB2 (XFD-5) and FoxI1c (XFD-10) in Xenopus embryogenesis
Barbara S Pohl et al. Mech Dev. 2002 Sep.
Free article
Abstract
We report on the temporal and spatial expression pattern of two novel genes of the Xenopus fork head/winged helix family, xFoxB2 and xFoxI1c. xFoxB2 is activated at the late blastula stage and first expressed within the dorsolateral ectoderm except for the organiser territory. During gastrulation, xFoxB2 is found in two ectodermal stripes adjacent to the dorsal midline. Expression is completely down-regulated during neurulation. However, two distinct sets of cells expressing xFoxB2 re-appear in the rhombencephalon of swimming tadpoles. xFoxI1c is initially expressed at the early neurula stage in an epidermal ring around the neural field. Subsequent expression is found to be increased, and is exclusively localised to placodal precursor cells. The placodal expression remains until stage 40, when it is restricted to a distinct region in the lateral body wall behind the gills.
Copyright 2002 Elsevier Science Ireland Ltd.
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