Recent technological breakthroughs greatly advanced our understanding of liver macrophage spatiotemporal diversity. (IMAGE) First Hospital of Jilin University Caption For instance, single-cell suspensions subjected to single-cell transcriptome analysis revealed the simultaneous presence of multiple immune cell phenotypes. Multiplex immunohistochemistry and imaging mass cytometry showed complex and spatially restricted accumulation of defined monocytic populations. In vivo time-lapse microscopy unravelled the timing of the immune response and dynamic macrophage functionality. Organ clearing and three-dimensional imaging further deepened in situ macrophage biology understanding. Credit By Adrien Guillot & Frank Tacke Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC 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.