Of Blood,Memories,Conscience and Life's reality

drawing by marguerita
The blood on their hands represents the inability to annul the murder from their memories.
While sleepwalking, Lady Macbeth was aggravated with own hands. She was seen muttering, ?
Out damned spot! Out, I say!? (V,I,39)
This proves that her evil deed in still on her conscience.
The odor of the blood also has the same effect. ?Here?s the smell of blood still.
All the perfumes of Arabia will not sweeten this little hand.?
( V, sc 1, 58-89) Her imagination grows of dreadful pictures and she tries perfume to mask the aroma.Shakespeare


But even the tiniest cut or gap in the smooth vessel wall will expose some of the fibrous strands beneath, and the platelets are primed to instantly detect the imperfection. A passing platelet will stick to the raggedy strand and change shape, from round to octopoid, which in turn attracts other platelets, forming a little clump. Natalie Angier -Basics - The Wonders of Blood - NYTimes.com