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Neuroreport. 1996 Sep 2;7(13):2159-62.

Transient neuronal population of the internal capsule in the developing human cerebrum.

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Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Republic of Croatia.


The present study reveals the presence of a distinct group of cells, resembling reticular thalamic neurones, in the internal capsule during fetal development. This cell population rapidly decreases in size during early infancy and few cells are apparent in the 1-year-old infant. Internal capsule cells are well differentiated, multipolar or polymorphous, AChE (acetylcholinesterase)-reactive neurones. The following specific molecular markers were demonstrated in the neurones of the internal capsule: MAP2 (microtubule-associated protein 2), somatostatin, calbindin-D28K and p75 low-affinity NGF (nerve growth factor) receptor. A group of neurones described here corresponds to the perireticular thalamic nucleus found in certain mammalian species, hitherto unidentified in the primate brain, which may play an important role during development.

[Indexed for MEDLINE]

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