Serology Introduction Vocabulary. Deoxyribonucleic Acid (DNA)- the molecules that carry the body’s genetic information. Plasma- the fluid portion of unclotted.

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Presentation transcript:

Serology Introduction Vocabulary

Deoxyribonucleic Acid (DNA)- the molecules that carry the body’s genetic information. Plasma- the fluid portion of unclotted blood Erythroctye- a red blood cell Serum- the liquid that separates from the blood when a clot is formed

Antigen- a substance, usually protein, that stimulates the body to produce antibodies against it. Antibody- A protein in the blood serum that destroys or inactivates a specific antigen. Antiserum- blood serum that contains specific antibodies.

Agglutination- the clumping together of red blood cells by the action of an antibody. Serology- the study of antigen-antibody reaction.

Serology Karl Landsteiner announced the discovery of the typing of blood. First to recognize that all human blood was not the same Classification system A-B-O system

Blood- refers to a highly complex mixture of cells, enzymes, proteins, and inorganic substances. Fluid portion= plasma Composed primarily of water and account for 55% of blood content RBC(erythrocytes) WBC platelets

Antigens impart specific characteristics to the red blood cells Blood antigens are grouped into systems depending on their relationship to one another Type A blood- each RBC has A antigens on its surface Type B blood- have B antigens Type AB- contain both A and B antigens Type O- have neither A nor B antigens on their cells The presence or absence of A and B antigens on the red blood cells determines a person’s blood type in the A-B-O system.

Another important blood antigen Rh factor (D antigen)- people w/ D antigen are said to be Rh positive; those without are said to be Rh negative. For EVERY antigen there exists a specific antibody. Each antibody symbol contains the prefix anti- followed by the name of the antigen for which it is specific EX: Anti-A is only specific for A antigen; Anti-b for B antigen

Review Questions 1.Who discovered that blood in distinguishable by its group or type? 2.What is plasma? What percentage of blood content does plasma account for? 3.What is the fourth important antigen other than A, B, and O?