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, also known as leukocytes, are part of your body's defense system. They can either act as sentries that patrol the body and look for invaders or target specific germs for destruction. There are several different categories of white blood cells. The first breaking point in categorizing white blood cells is to look at granules.