Osteocalcin (human) is a vitamin K-dependent bone specific protein. Osteocalcin (human) is chemotactic for several of the cell types frequently found at bone remodeling surfaces.

Dauricumine is a chlorinated alkaloid that inhibits NF-κB ligand-induced differentiation of mouse bone marrow-derived macrophages into multinucleated osteoclasts.

Thymic factor X (TFX-Jelfa) is an aqueous extract from the thymus of a juvenile calf and is a natural stimulator of lymphocyte function.