College of Science, Technology, Engineering, and Mathematics, Eastern Washington University 1 article published in JoVE Developmental Biology Stimulation of Notch Signaling in Mouse Osteoclast Precursors Gurpreet Kaur1,2, Jaimo Ahn1, Kurt D. Hankenson1,3, Jason W. Ashley1,4 1Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, 2Department of Biological Sciences, University of the Sciences, 3The Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, 4Department of Biology, College of Science, Technology, Engineering, & Mathematics, Eastern Washington University Notch signaling is a form of cellular communication that relies upon direct contact between cells. To properly induce Notch signaling in vitro, Notch ligands must be presented to cells in an immobilized state. This protocol describes methods for in vitro stimulation of Notch signaling in mouse osteoclast precursors.