Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 1,164

The DOI matches its Crossref record.

The Nature of the Frog Skin Potential

KOEFOED‐JOHNSEN, VALBORG, USSING, HANS H.·1958·Acta Physiologica Scandinavica

Abstract

Summary.: 1. The outside of the isolated frog skin in the absence of penetrating anions behaves over a wide range of concentrations as a sodium electrode, while the inward‐facing surface behaves like a potassium electrode. 2. A theory concerning the origin of the frog skin potential is put forward based on these observations and the assumption that the active transport of sodium is located at the inward‐facing membrane of the epithelial cells. 3. Reasons are given for the hypothesis that the active transport of sodium in reality is a forced exchange of sodium against potassium.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1111/j.1748-1716.1958.tb01563.x

Cites

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cited by

See all 1,164

Metadata

Authors
KOEFOED‐JOHNSEN, V., & USSING, H. H.
Venue
Acta Physiologica Scandinavica
Publisher
Wiley
Published
1958-08
Volume
42
Issue
3-4
Pages
298-308
ISSN
  • 0001-6772 (ISSN-L)
  • 1365-201X
OpenAlex
W2051766330
Cited by
1,164
References
0
FWCI
12.77
Type
journal article
Language
en
Open access
closed

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: The Nature of the Frog Skin Potential. https://app.cochat.ai/papers/10.1111/j.1748-1716.1958.tb01563.x
The paper
KOEFOED‐JOHNSEN, V., & USSING, H. H. (1958). The Nature of the Frog Skin Potential. Acta Physiologica Scandinavica. https://doi.org/10.1111/j.1748-1716.1958.tb01563.x

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.