Abstract
THE area postrema in the cat is a region which protrudes from, the dorsal surface of the medulla into the fourth ventricle. It begins in the midline ventral to the obex and passes rostrally as a bilateral structure1,2. The area postrema can be stained selectively by the administration of vital dyes3. Immediately ventral to the area postrema and dorsolateral to the dorsal vagal nucleus is a vascular structure which has a very distinctive cylindriform appearance following cholinesterase staining. This sub-postremal region is bilateral and is not stained by vital dyes.
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GWYN, D., WOLSTENCROFT, J. Cholinesterases in a Vascular Structure in the Floor of the Fourth Ventricle of the Cat. Nature 214, 831–832 (1967). https://doi.org/10.1038/214831a0
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DOI: https://doi.org/10.1038/214831a0
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