Biofilm growth on glass (IMAGE) University of Massachusetts Amherst Caption The glass treated with ultraviolet rays (inside), had 98% less biofilm growth than the untreated glass (outside). Credit Lanzarini-Lopes research group Usage Restrictions To be used when describing the UV emitting glass 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.