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Science. 1977 Jan 14;195(4274):203-5.

Chloride transport across isolated opercular epithelium of killifish: a membrane rich in chloride cells.


The opercular epithelium of Fundulus heteroclitus contains typical gill chloride-secreting cells at the high density of 4 X 10(5) cells per square centimeter. When isolated, mounted as a membrane, and short-circuited, it actively transports chloride ions from the blood side to the seawater side of the preparation. This preparation offers a useful approach to the study of osmoregulation in bony fishes.

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