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Evidence that urocortin is absent from neurons of the Edinger-Westphal nucleus in pigeons BJMBR
Cavani,J.A.; Reiner,A.; Cuthbertson,S.L.; Bittencourt,J.C.; Toledo,C.A.B..
The Edinger-Westphal nucleus (EWN) is a central preganglionic parasympathetic cell group that gives rise to cholinergic input to the ciliary ganglion, thereby regulating several neurovegetative ocular functions. Recently, the supposed presence of the neuropeptide urocortin (UCN) has been reported in EWN neurons in rodent brain. The purpose of the present study was to examine the distribution of UCN in avian brain and to investigate by immunohistochemical analysis the possible use of this substance as an EWN marker in a non-mammalian class of vertebrates. Brain tissue of pigeons was incubated with a specific antibody against UCN and the results showed labeling of many small neurons, forming a double wing in the dorsal mesodiencephalic transition area. Their...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Urocortin; Avian brain; Visual system; Oculomotor complex; Comparative neuroanatomy.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003001200011
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