Filling the Capsid (image) University of Pennsylvania School of Medicine Share Print E-Mail Caption This image shows gradual filling of viral capsid (blue oval, left panel) by DNA (yellow), which is driven into the capsid by the protein motor (red). Credit Stephen Harvey, PhD, Perelman School of Medicine, University of Pennsylvania. 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.