Brain Cells (IMAGE) Johns Hopkins Medicine Caption Brain cells from an SIV-infected macaque treated with ingenol and vorinostat. Macrophages are marked in green and the virus in red; virus-infected macrophages appear orange/yellow (arrows). Blue marks the nuclei of all cells. Credit Stephen Wietgrefe 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.