Arugula is also a good source of vitamin A, which is important for maintaining good vision, cell growth and immune function, with each serving providing 475 international units of vitamin A, or 10 percent of the recommended daily amount.
Neutrophils are white blood cells that serve as important phagocytes, or garbage collectors. There are about 100 billion of these cells produced every day in the bone marrow and they account for about 70% of the white blood cells in circulation in your body.
White blood cells and are found in the blood plasma with erythrocytes, better known as red blood cells. Red blood cells are also called erythrocytes. Mast cells are leucocytes, which are a type of white blood cells. White blood cells may be examined under a microscope to check for signs of problems with the mast cells.