Vaccinia Virus-Infected African Green Monkey Cells (image) Kansas State University Share Print E-Mail Caption An African green monkey cell line was infected with a vaccinia virus strain that encodes a green fluorescent protein for the easy visualization of infection. Twenty-four hours after infection, plaque formation in the cell layer was observed, which resulted from cells that were destroyed by the virus, pictured in the left image. Virus-infected cells appear green in image obtained using fluorescence microscopy, pictured in the right image. Credit Images captured by Sherry Haller in the Rothenburg lab. 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.