Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2018 Dec 3;150(12):1606–1639. doi: 10.1085/jgp.201812203

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2018 Harris

This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms/). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 International license, as described at https://creativecommons.org/licenses/by-nc-sa/4.0/).

PMC Copyright notice

Figure 4. — Early recordings of voltage dependence of junctional conductance of pairs of Ambystoma blastomeres. Upper panels: Application of polarizing current (I₁) to one cell (V₁) of a coupled pair (V₁, V₂) causes the cells to uncouple (from Spray et al. [1979]). Middle panels: Voltage clamp of two coupled blastomeres. Voltage of one cell (V₁) is kept constant, while the other cell (V₂) is stepped to positive or negative voltages. The junctional current (I_j) is recorded as the clamp current applied to cell 1 (from Spray et al. [1981a]). Bottom panel: Plot of the steady-state junctional conductance–voltage relation of a pair of coupled blastomeres. Lines are Boltzmann fits to each polarity of voltage (from Spray et al. [1981a]). Fig. 4 top is reprinted with permission from Science.