Influenza A Infection in Cell Culture (image) Rockefeller University Share Print E-Mail Caption To test which virus-fighting proteins could interfere with the spread of an infection, the researchers introduced immune genes individually into cells, before infecting them with Influenza A. Above, all cells' nuclei appear in blue, infected cells in green. Credit Rockefeller University/Laboratory of Virology and Infectious Disease Usage Restrictions This image may be used only to illustrate the research described in the accompanying story. 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.