An associate degree is an undergraduate academic degree awarded by colleges and universities upon completion of a course of study intended to usually last two years. It is considered to be a greater level of education than a high school diploma or GED. The first associate degrees were awarded in the U.K. in 1873 before spreading to the U.S. in 1898. They have since been introduced in a small number of other countries.
Monocytes are the largest of the white blood cells. These are the cells that 'clean up' our blood the most. Monocytes also employ phagocytosis to 'eat' foreign particles, bacteria and dead neutrophils.
However, in the blood stream, there are about 600 red blood cells for every white blood cell. There are several different types of white blood cells. Granulocytes are one type of several types of white blood cells that are in fact used in more specialized transfusion therapy. Granulocytes and monocytes protect against infection by surrounding and destroying invading bacteria and viruses, and lymphocytes aid in the immune defense system.