Sodium-sensing niche (IMAGE) University of Münster Caption As an immediate reaction to elevated concentrations of salt (NaCl), the concentration of calcium in the cytosol of a specific group of cells (the sodium-sensing niche) increases within one minute. Shown in false colours: red (highest concentration) > yellow > green > blue. Credit AG Kudla Usage Restrictions Only use in context with this press release. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.