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.
White Blood Cells. Even though white blood cells are outnumbered by red blood cells 700 to one and make up less than 1% of the blood's volume, they still play a vital role for the body, they are a mobile defence force that also removes all of the blockages in th ecirculatory system.uppfer cells, or hepatic macrophages, are irregularly-shaped, yellow white blood cells that live permanently in the liver. In the liver, they trap, eat, and then recycle worn-out red blood cells. Kupffer cells also remove bacteria and debris using phagocytosis from the blood in the liver.