... – ] were unchanged after transfer, and plasma cortisol underwent a transient increase. Na + /K + -ATPase activity increased 1.5-fold in the gills and opercular epithelium at 7 days (significant in gills only), responses that were preceded by three- to fourfold increases in Na + /K + -ATPase α 1a mRNA...

... mirabilis ). J. Physiol., Lond . 319 , 165 –178. Marshall, W. S. ( 1995 ). Transport processes in isolated teleost epithelia: Opercular epithelium and urinary bladder. In Cellular and Molecular Approaches to Fish Ionic Regulation (ed. C. M. Wood and T. J. Shuttleworth), pp. 1–23. New York...