Beginning of Essay
Blood is known to all of us to represent life, death and often injury. Blood is an essential part of life, and without blood, we could not live. This is known to everyone, and because of this, when Shakespeare uses the symbol of blood to represent treason, murder ....

Middle of Essay
.... is referred to when Malcolm and Donaldbain are discussing what to do and Malcolm says : "there's daggers in men's smiles: the nearer in blood, the nearer bloody." Meaning that their closest relatives are likely to kill them. Again, blood is being used to describe treason, murder and death. In Act 5, Scene 1 - the sleepwalking scene, while Lady Macbeth is sleepwalking, there are constant references to the evil deeds that Macbeth and herslef have committed, most of which include references to blood. She goes through the motions of washing her hands saying "Out damned spot! Out, I say" in reference to the blood that stained her hands after smearing it ....