Boost weak immune system (IMAGE) Technische Universität Dresden Caption An overview of how the method proposed by the Sieweke group boosts weak immune system. (A) M-CSF cytokine works in the bone marrow to promote generation of monocytes and macrophages, without disturbing the formation of other immune cells; (B) Monocytes and macrophages activate natural killer cells to enable them to target virus-infected cells and kill them through cell–cell contact and the release of toxic agents. Source: Macrophage colony-stimulating factor as a weapon against cytomegalovirus. Eric Solary, EMBO Mol Med. e18319 (2023). Credit EMBO, licensed under CC BY 4.0 (http://creativecommons.org/licenses/by/4.0) Usage Restrictions No License Original 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.