We examined the spatial expression of the relaxin-3 gene in the developing zebrafish brain, one of the vertebrate model systems in which this gene has been identified. Until the pharyngula stage, the gene is expressed diffusely in the brain, where, starting at about 40 hpf, the transcripts appear restricted in a midbrain cell cluster of the periaqueductal gray. Later, at 72 hpf, the transcripts are still evident in that cluster and distributed in a larger cell number; at this stage, the gene is also expressed posteriorly, in a smaller cell group that, as we report for the first time, could be homologous to mammalian nucleus incertus.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.