litres, Each person has got 4-6 ................. of blood., oxygen, The blood supplies the whole body with .............., cells, The blood is red because of the red blood ................., groups, A, AB, O and B are blood .................. ., plaster, When you have an injury put a ............... on it., red, ........... blood cells carry oxygen., white, .............. blood cells are the defence of your body.

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