Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1978 May 8;286(18):1319-22.

[Contribution of divalent cations to the maintenance of membrane potentials in the oocytes of Pleurodeles waltlii Michah (Amphibia, Urodela)]

[Article in French]
J P Vilain
  • PMID: 96993

[Contribution of divalent cations to the maintenance of membrane potentials in the oocytes of Pleurodeles waltlii Michah (Amphibia, Urodela)]

[Article in French]
J P Vilain. C R Acad Hebd Seances Acad Sci D. .

Abstract

When the external concentration of Ca and Mg is changed, the oocyte membrane potential, in the Urodela Amphibian: Pleurodeles waltlii, is not significantly modified. The addition of chelator agents, EGTA and EDTA in Ca, Mg free Steinberg solution promotes a membrane depolarisation and the rise of membrane conductance. It is concluded that divalent ions Ca++ and Mg++ are needed to maintain a potential difference between internal and external medium of the oocyte.

PubMed Disclaimer

Publication types