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J Chem Neuroanat. 1999 Jun;16(4):233-43.

Distribution of calretinin-like immunoreactivity in the brain of Rana esculenta.

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Dipartimento di Biologia Animale, Università di Pavia and Centro di Studio per l'Istochimica, C.N.R., Italy.


The distribution of calretinin-like immunoreactivity has been analyzed in the brain of Rana esculenta. Several neurons of nuclei belonging to sensory pathways, subhabenular area and left habenula were immunopositive. Immunoreactivity was present in fibers of motor and sensory pathways, thalamus, tegmentum and isthmus. The immunolabeling pattern partially overlapped that previously described in the rat. However, in comparison with the rat, fewer cells and fibers were immunoreactive and there were less positive brain nuclei. especially in the pallium, septum and striatum, that were totally negative. Taking into consideration that these regions are rather simple in the frog, the presence of calretinin seems to be consistent with the degree of complexity of brain areas and segregation of different nuclei.

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