Synthetic saliva using a dairy protein (IMAGE) University of Leeds Caption Lactoferrin which is a protein found in milk - coloured dark blue - forms the mesh-like architecture of the hydrated microgel, partially coated by a hydrogel made by a polysaccharide κ-carrageenan, coloured light blue. Credit Please credit: Dr Anna Tanczos, www.SciCommStudios.co.uk Usage Restrictions You must use the picture credit License Original 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.