Factors that regulate T cell function and contribute to ovx induced bone loss. Ag, antigen; BMM, bone marrow macrophages; DC, dendritic cells; IFN, interferon; IL, interleukin; OC, osteoclast; ovx, ovariectomy; RANK, receptor activator of NF-κB; RANKL, RANKL ligand; TGF, transforming growth factor; TNF, tumor necrosis factor.