Did you know that your bones are totally reborn every three months? The mechanism is something like this. Fisrtly, bone-destroying cells attach themselves to the surface of a bone, exude acid and enzyme, and start decomposing the bone. Then, bone-creating cells take their place and give off calcium, and coat the surface with protein that works as "paste". Fianlly, calcium carried over in the blood stream gets stuck to the past. Now the new bone is complete. это звучит нормально?