3-D Print of Influenza Virus (image) NIH/National Institute of Allergy and Infectious Diseases Share Print E-Mail Caption This is a 3-D print of influenza virus. The virus surface (yellow) is covered with proteins called hemagglutinin (blue) and neuraminidase (red). Credit NIH Usage Restrictions None Share Print E-Mail 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.