Now let's move on to the cells that are found in the blood that are called upon by these chemicals released into our blood in the first place by the mast cell and by other cells of our body. So let's begin with a group of cells known as granulocytes. And these granulocytes are called granulocytes because they have granules. They have tiny vesicles that contain chemicals within the cytoplasm. So we have neutrophils, we have basophils and we have eosinophils. And all these cells are found within the blood and they respond to these chemicals released into the blood and then they move into the skin tissue where our infection is taking place.