.... (B) Apical surface of the secretory epithelium. (C) Freeze-fracture of the epithelium, showing an arteriole with erythrocytes and collagen bundles (adapted from Mackessy, 1991 ). (D) Mitochondria-rich cells are recessed below the surface of the surrounding secretory epithelial cells. (E–H...

... conditions during transepithelial transport. * e-mail: [email protected] 21 02 2000 06 04 2000 © 2000 by Company of Biologists 2000 vacuolar-type H + -ATPase bafilomycin dinitrophenol short-circuit current apical membrane insect mosquito Aedes aegypti secretory...

...Paulo S. Beirão; José Hamilton M. Nascimento ABSTRACT The secretory epithelium of the mantle of the clam Anomalocardia brasiliana is excitable. The ionic dependence of its action potentials was investigated. Two distinct phases could be recognized by their ionic dependences. The early spike phase...

...Paulo S. Beirão; A. L. Sorenson ABSTRACT The secretory epithelium that faces the shell of the clam Anomalocardia brasiliana is electrically excitable. It was found that two types of action potentials could be elicited by electrical stimulation. In mantles showing signs of being in the phase...