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 Cell Chases Down And Gobbles Up Bacteria [GIF] Your body uses white blood cells to fight off the bacteria and viruses that invade your body and make you sick. In the gif below you can see a white blood cell called a neutrophil chase down a Staphylococcus aureus bacterium. The circular cells that the white blood cell is moving through are red blood cells. Your body is constantly covered (inside and out) by bacteria.