Microscopic Image of KS Cells (IMAGE) Florida State University Caption KSHV ORF45 activates cellular ribosomal S6 kinases 1 (RSK1) and RSK2, and recruits them to the viral replication compartment in the nucleus. Credit Courtesy Fanxiu Zhu 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.