So DNA polymerase is basically this protein molecule that contains coronary structure, that contains many subunits. And this DNA polymerase is a Glybla protein. It allows the replication of the DNA during the process of mitosis and meiosis. Now, the type of Glibla protein we're going to focus on in this lecture is hemoglobin. And hemoglobin is the oxygen carrier inside our blood. So hemoglobin essentially picks up oxygen in the lungs and it moves the oxygen via the blood, the circulatory system into the cells and tissues of our body that need the oxygen to synthesize ATP molecule.