Asymmetrical permeability of the integument of tree frogs (Hylidae).

  title={Asymmetrical permeability of the integument of tree frogs (Hylidae).},
  author={Thomas Yorio and Peter J. Bentley},
  journal={The Journal of experimental biology},
The skin from four species of North American tree frogs (Hylidae) was found in vitro, to be remarkably permeable to water in the presence or absence of the neurohypophysial hormone vasotocin. This property was, however, only seen in preparations from the ventral integument; osmotic water movement across the dorsal skin was negligible. The ionic permeability, reflected by the electrical resistance, was also much greater in the ventral skin. Unidirectional fluxes of 22Na, 36Cl, 14C-urea and… CONTINUE READING

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