The Blood reference article from the Simple Wikipedia on 24-Jul-2004
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Blood

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Blood is the liquid found in humans and most animals. Blood gives our tissues (like our skin) nutrients and oxygen.

Blood is made up of blood plasma, red blood cells, white blood cells and plateletes. Blood plasma is a yellow liquid. Red blood cells carry oxygen around our body. White blood cells kill disease, useless waste. Plateletes help in fixing cut skin.