Cross Sections of Empty and Filled Virus (image) University of California - San Diego Caption This image shows cross-sections of the empty prohead of the bacteriophage phi29 (left) and the fully assembled virus (right). A molecular motor transports the DNA (red) into the prohead through a portal. Higher resolution TIFF image available. Credit Jingua Tang and Timothy Baker, University of California, San Diego Usage Restrictions For use in coverage of this research finding only. For other uses, please contact firstname.lastname@example.org. 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.