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

. 2002 Oct;120(4):567–579. doi: 10.1085/jgp.20028665

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

Copyright © 2002, The Rockefeller University Press

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 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/).

PMC Copyright notice

Figure 5. — The effect of low pH_i on the response of V_Ca to the application of 10 mM caffeine. The first half of a long experiment is shown, including the period during which the calcium-sensitive microelectrode was pushed right through the cell and then withdrawn back into the cell. After two applications of 10 mM caffeine, an HCl microelectrode was inserted through which currents were passed to decrease pH_i, shown as downward deflections on the current record. Caffeine was applied as shown by the bars below the V_Ca record, and bicarbonate (5 mM) was applied for two periods as indicated.