So, going this way, the oxygen is binding onto the myoglobin. But going this way, the oxygen is dissociating. Notice as we go this way, as we decrease the concentration of that oxygen, that myoglobin remains bound to that oxygen. And the myoglobin only begins to unload or release that oxygen when the partial pressure drops to a very low quantity, and it essentially unloads it altogether. All the myoglobin unloads the oxygen very quickly and together when we drop that partial pressure to a certain value. So myoglobin does not release oxygen until the partial pressure drops to a very low quantity.