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Blood cell

A blood cell is any cell of any type normally found in blood. In mammals, these fall into three general categories:

  • red blood cells, whose main purpose is the transport of oxygen
  • white blood cells, which act as immune cells and fight infection
  • Platelets, which are actually fragments of the large bone marrow cells known as megakaryocytes and are important in blood clotting

"There are some experiences in life which should not be demanded twice from any man, and one of them is listening to the Brahms Requiem." - George Bernard Shaw (1856-1950)