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"Blood" is the "River or Elixir of Life" of all living creatures. This red liquid not only carries nutrients and oxygen to every part of our body but also waste products for disposal by our lungs, kidneys and liver. "Blood" plays as an important role in our immune and hormonal system as well as the body's temperature and fluid balance. It helps our body to function in many ways. Although "Blood" appears red, more than half of it consists of a yellowish liquid called plasma, the remainder being the cellular components of "Blood". The majority of these cellular components are composed of red cells which gives "Blood" its natural colour. The remaining cellular components are the infection-fighting white cells and the small cellular fragments, involved in bleeding control, called platelets. |
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