Development of Taste (IMAGE) University of Pennsylvania School of Medicine Caption The pattern of active wnt protein (dark blue) follows the development of taste papillae and buds in the tongue of a mouse. Credit Sarah Millar, University of Pennsylvania School of Medicine; Linda A. Barlow, University of Colorado Health Sciences Center; Nature Genetics Usage Restrictions None 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.