| A | B |
|---|
| Serology | the examination and analysis of body fluids. |
| A forensic serologist | analyzes a variety of body fluids including saliva & semen & urine & blood. |
| Plasma | the fluid portion of the blood represents 55% blood volume |
| Cells | the solid part of the blood represents 45% of blood volume |
| Erythrocytes | are red blood cells and are responsible for oxygen transport |
| Leukocytes | are white blood cells and are responsible for defense against foreign pathogens |
| Thrombocytes | are platelets and are responsible for blood clotting |
| Serum | the liquid that separates from the blood when a clot is formed. |
| Karl Landsteiner | discovered that there are four different types of human blood based on the presence or absence of specific antigens found on the surface of the red blood cells. |
| ABO blood groups | based on having an A or B or both or no antigens on red blood cells |
| Rh factor | another antigen present on red blood cells |
| Antigen | a substance that can stimulate the body to make antibodies. . |
| Antibody | a soluble molecule found in serum that reacts with an antigen |
| Agglutination | clumping of red blood cells that will result if blood types with different antigens are mixed |
| Kastle-Meyer color test | a mixture of phenolphthalein and hydrogen peroxide and the hemoglobin in blood will cause the formation of a deep pink color if blood is present |
| Luminol test | reaction with blood to produce light |
| Blood type A | has antigen A on the surface of the cell |
| Blood type B | has antigen B on the surface of the cell and |
| Blood type AB | has antigens A and B on the surface of the cells |
| Blood type O | has neither antigen A or B and will not agglutinate. |
| Blood type Rh positive | has Rh antigens on the surface of the blood cells. |
