Grass Stomata (IMAGE) Stanford University Caption The protein in yellow moves out of the guard cells into cells on both sides. By recruiting these cells, grass stomata become better suited to hot and dry environments. Credit Michael Raissig and Dominique Bergmann Usage Restrictions Image may only be used with appropriate caption or credit 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.