And this is because leukocytes are actually our immune cells that protect us from bacterial and viral agents. So we have different types of leukocytes and we'll focus on these different types and their functions. When we'll discuss our immune system. For example, we have monocides, we have lymphocytes, and we also have mast cells and other leukocyte types. Now, let's move on to our Thrombicides, also known as platelets. Now, the ratio of Thrombocides to red blood cells in our blood is about one to ten.