Rh blood - Determines if blood type is either negative or positive., Confirmatory test - A test to see if the blood is human blood., Presumptive test - A test that indicates if a stain is blood., Passive blood drop - Drops of blood that form from the force of gravity alone., Swipes - The transfer of blood from a moving source onto an unstained surface., Wipes - Formed when a moving object moves through a surface with an already existing stain., Leukocytes - White blood cells, Arterial gushes - Occurs when an artery is damaged and the blood comes out in spurts or gushes from the wound in large volume pulses. (As long as the heart is beating, the blood keeps on spurting), Multiple Spatters - When there are two or more blood spatters appear scientist can draw a line of convergence that can show the origin of the blood source., Erythrocytes - Red blood cells,

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