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. White blood cells, also called leukocytes, are much fewer in number than red blood cells. There are 5 different types of white blood cells that work together to protect the body by attacking foreign invaders, including bacteria, viruses and tumors. The most common type of white blood cells are called neutrophils. All types of white blood cells are produced in the bone marrow.