Schnurri-3: A Key Regulator of Postnatal Skeletal Remodeling -- Ectodomain Shedding of Receptor Activator of NF-?B Ligand -- The Negative Role of IDS in Osteoclastogenesis -- Functional Genetic and Genomic Analysis of Modeled Arthritis -- Dexamethsone Suppresses Bone Formation via the Osteoclast -- Immunologic Regulation of Bone Development -- PTH Regulates the Hematopoietic Stem Cell Niche in Bone -- Regulation of Hematopoietic Stem Cells in the Osteoblastic Niche -- The Chemokine CXCL12 and Regulation of Hsc and B Lymphocyte Development in the Bone Marrow Niche -- Osteoclast Precursor Cells -- Interaction with Estrogen Receptors as Treatment of Arthritis and Osteoporosis -- Novel Signaling Pathways and Therapeutic Targets in Osteoclasts -- The Enigmatic Function of TREM-2 in Osteoclastogenesis -- Role of Cell-matrix Interactions in Osteoclast Differentiation -- Positive and Negative Roles of IL-6, STAT3, and SOCS3 in Inflammatory Arthritis -- Control of Osteoclast Activity and Bone Loss by IKK Subunits: New Targets for Therapy -- Targeting Osteoporosis and Rheumatoid Arthritis by Active Vaccination Against RANKL -- RANKL Inhibition: From Mice to Men (and Women).