Abstract
An immunohistochemical study was made of the octavolateral centres in the medulla of a cartilaginous fish, using an antibody specific for dopamine. No immunopositive cell bodies were observed but dopaminergic fibres were present in parts of the region. The overlying cerebellar crest was devoid of dopamine; the dorsal (electroreceptive) nucleus was poorly innervated, but the medial (mechanoreceptive) nucleus received a rich dopaminergic innervation comprising very fine, varicose fibres.
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