Evolutionary alteration in anterior patterning: otx2 expression in the direct developing frog Eleutherodactylus coqui.

Abstract

The homeobox gene otx2 is a key regulator for specifying the rostral part of the vertebrate head. In Xenopus, otx2 directly controls the differentiation of the cement gland, the anterior-most organ formed in the tadpole. Since embryos of a direct developing frog, Eleutherodactylus coqui, lack a cement gland, we are interested in whether altered expression… (More)

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