1. Walker DG (1975) Control of bone resorption by hematopoietic tissue. The induction and reversal of congenital osteopetrosis in mice through the use of bone marrow mononuclear phagocytes. J Exp Med 156:1604–1614
2. Walker DG (1975) Bone resorption restored in osteopetrotic mice by transplants of normal bone marrow and spleen cells. Science 190:784–785
3. Gothlin G, Ericsson JLE (1973) On the histogenesis of the cells in fracture callus. Electron microscopic and autoradiographic observations in parabiotic rats and studies on labeled monocytes. Virchows Arch B Cell Pathol 12:318–329
4. Jee WS, Nolan PD (1963) Origin of osteoclasts from fusion of phagocytes. Nature 200:225–226
5. Baron R, Neff L, Van PT, Nefussi JR, Vignery A (1986) Kinetic and cytochemical identification of osteoclast precursors and their differentiation into multinucleated osteoclasts. Am J Pathol 121:363–378