1. Blood and Blood Spatter Vocabulary

2. Agglutination - the clumping of molecules or cells caused by an antigen–antibody reaction
Antibodies - proteins secreted by white blood cells that attach to antigens
Antigen–antibody Response - a reaction in which antibodies attach to specific antigens
Antigens - any foreign substance or cell in the body that reacts with antibodies
Cell-surface protein - proteins embedded in the cell membrane

3. Lines of Convergence - a two dimensional view of the intersection of lines formed by drawing a line through the main axis of at least two drops of blood that indicates the general area of the source of the blood spatter
Point of Origin - a three-dimensional view formed using lines of convergence and angles of impact of at least two different drops of blood to identify the source and location of blood splatter
Red blood cells - donut-shaped cells that carry oxygen throughout the body

4. Satellite drop of blood - secondary drop formed when some blood breaks free from the main contact drop of blood
10. White blood cells - cells that police the body by destroying foreign materials