title: Callus formation in bone transplantation.
mesh_terms: D001861:Bone Regeneration; D016025:Bone Transplantation; D006801:Humans; D009999:Ossification, Heterotopic; D014182:Transplantation, Autologous; D014183:Transplantation, Heterologous; D014184:Transplantation, Homologous