Cell-To-Cell Communication in Yeast (IMAGE) University of Washington Caption University of Washington researchers have produced cell-to-cell communication in baker's yeast, a first step in building multicellular organisms from scratch. The red yeast cells produce a plant hormone, which "tells" the green cells to express a gene differently. Credit University of Washington Usage Restrictions With 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.