And what that means is it decreases the blood clotting capability of our blood and that makes the blood more leaky and also increases the flow of blood to this area. On top of that these chemicals also make the capillaries more leaky and that means more blood can actually get into the tissue and that means more of these white blood cells can end up in the tissue that is infected by this pathogen. So these chemicals essentially initiate the process of inflammation that takes place in the innate immune system. Now these also release cytokines and the cytokines essentially call upon other cells. For example macrophages, neutrophils and other cells as we'll discuss in just a moment. Now let's move on to this other cell found within a tissue known as aridandritic cell.