So they basically resorb our bone. They break down the bone and release these constituents, such as calcium and phosphate, into our bloodstream. So once resorption actually takes place and once we break down the bone, the matrix, what happens is these cells basically depart, they detach and move away while the osteoblasts shown in blue are now recruited and activated. And these cells basically go on to attach to the same exact region where the resorption basically took place, as shown in this diagram. And once they bind to that section, they begin to rebuild our bone by creating collagen secreting that collagen into this area, as well as absorbing the calcium and phosphate from the blood to create the hydroxy appetite. And eventually, when some time passes, we basically fill this entire section up with the newly formed matrix.