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Background
Development of paired sensory organs is a highly complex and coordinated process. These organs arise from ectodermal thickenings in the cephalic region known as cranial placodes. We have previously shown that Zic1 is a critical regulator for the formation of the pre‐placodal region (PPR), the common territory for the development of all cranial placodes in Xenopus laevis.
Results
In this...
Retinoic acid (RA) is a vital morphogen for early patterning and organogenesis in the developing embryo. RA is a diffusible, lipophilic molecule that signals via nuclear RA receptor heterodimeric units that regulate gene expression by interacting with RA response elements in promoters of a significant number of genes. For precise RA signaling, a robust gradient of the morphogen is required. The developing...
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