image 3 (IMAGE) Shinshu University Caption Close up of a graphene oxide membrane where lactose and water permeates through; leaving fat, proteins and large molecules in milk. Credit Aaron Morelos-Gomez, Shinshu University Usage Restrictions The 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.