Indicate true (T) and false (F) statements below regarding bone and bone remodeling. Your answer would be a four-letter string composed of letters T and F only, e.g. FFFF.
( ) Cells that demolish old bone matrix are related to macrophages of the immune system.
( ) Bone is over 99% nonliving material.
( ) A blood capillary can form as bone is excavated during remodeling.
( ) Tunnels made by osteoclasts are immediately and fully refilled by osteoblasts.