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1939—splatter patterns first analyzedBlood may splatter when a wound is inflictedBlood splatter pattern—a grouping of blood stainsPatterns help to reconstruct the events surrounding a shooting, stabbing, or beating
Blood consists of cellular components and plasma. The various human blood types are caused by the presence or absence of A and/or B proteins on the surface of red blood cells. Blood splatter evidence can be used to recreate a crime scene. Investigators endeavor to (a) locate, (b) identify, and (c) interpret blood splatter patterns at crime scenes.