Virions in a preparation of HIV (IMAGE) University of North Carolina Health Care Caption This thin section transmission electron micrograph (TEM) depicts numerous virions revealed in a preparation of HIV (human immunodeficiency virus). Credit CDC Public Health Image Library Usage Restrictions None License Licensed content 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.