To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1 Csf1r-EGFP macrophages crossing the ventricular wall and entering the cerebroventricular lumen (2 cell crossing events were observed from live-imaging of 7 embryonic slice cultures). CNS macrophages differentially rely on an intronic Csf1r enhancer for their development David A. D. Munro, Barry M. Bradford, Samanta A. Mariani, David W. Hampton, Chris S. Vink, Siddharthan Chandran, David A. Hume, Clare Pridans, and Josef Priller Development 2020. 147:None-None; doi: 10.1242/dev.194449 Download Original Video