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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