disease in which the HIV virus attacks the T cells, thereby compromising the body's immune system
antibodies
substance produced by the body that destroys or inactivates a specific substance that has entered the body
antigen
substance that, when introduced into the body, causes formation of antibodies against it
adenoid
glandlike; adenoids or pharyngeal tonsils, are paired lymphoid structures in the nasopharynx
anaphylactic shock
shock resulting from a severe allergic reactions, may be fatal
B-cell
a lymphocyte; activated B cells develop into plasma cells, which secrete antibodies into the blood
cell mediated immunity
resistance to disease organisms resulting from the actions of cells; chiefly sensitized T cells
cisterna chylia
an enlarged pouch on the thoracic duct that serves as a storage area for lymph moving toward its point of entry into the venous system
clone
any of a family of many identical cells descended from the single "parent" cell
combining sites
antigen binding sites, antigen receptor regions on antibody molecule
complement
any of several inactive enzymes normally present in blood, which, when activated, kill foreign cells by dissolving them
complement cascade
rapid fire series of chemical reactions involving proteins called complements, which are triggered by certain antibody-antigen reactions, and resulting in the formation of tiny protein rings that create holes in a forgein cell and cause its destruction
humoral immunity
immunity that is produced when antibodies make antigens unable to harm the body
inflammatory response
nonspecific immune process produced in response to injury and resulting in redness, pain, heat, and swelling and promoting movement of white blood cells to the affected area
interferon
small proteins produced by the immune system that inhibit virus multiplication
interstitial fluid
fluid located in the microscopic spaces between the cells
Kupffer cell
macrophage found in spaces between liver cells
lymph
specialized fluid formed in the tissue spaces that returns excess fluid and protein molecules to the blood
macrophage
phagocytic cells in the immune system
memory cells
cells that remains in the reserve in the lymph nodes until its ability to secrete antibodies is needed
monoclonal antibodies
specific antibody produced from a population of identical cells
nonspecific immunity
protective mechanisms that provide immediate, generic protection against any bacteria, toxin, or other injurious particle
plasma cells
cells that secrete copious amounts of antibody into the body
specific immunity
protective mechanisms that provide specific protection against certain types of bacteria or toxins