| A | B |
|---|
| 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 antigens 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 |
| lines of convergence | a 2 demensional view of the intersection of lines through the main axis of at least 2 drops of blood that indicates the general area of the source of the blood spatter |
| point of origin | a 3D view formed using lines of convergence and angles of impact of at least two different drops of blood to identify the source and locationi of blood spatter |
| red blood cells | donut-shaped cells that carry oxygen throughout the body |
| white blood cells | cells that police the body by destroying foreign materials |
