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Chapter 17
Adaptive Immunity: Specific Defenses of the Host
22
Microbiology
Undergraduate 2
04/04/2012

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Term
adaptive immunity
Definition
third line of defense
t cells and b cells
Term
Dual nature of Adaptive Immunity
Definition
T and B cells develop from stem cells in red bone marrow
Term
antigens
Definition
a substance that causes the body to produce specific Ab or sensitized T cells
Term
antibodies
Definition
interact with epitopes or antigenic determinants
Term
hapten
Definition
antigen combined with carrier molecules
Term
globular proteins
Definition
immunoglobulins
Term
agglutination
Definition
reduces number of infectious units to be dealt with
Term
opsinization
Definition
coating antigen with antibody enhances phagocytosis
Term
complement fixation
Definition
causes inflammation and cell lysis
Term
antibody-dependent cell-mediated immunity
Definition
antibodies attached to target cells cause destruction by macrophages, eosinophils, and NK cells
Term
neutralization
Definition
blocks adhesion of bacteria and viruses to mucosa, and also blocks attachment of toxin
Term
antibody titer
Definition
amount of antibody in serum
Term
primary response
Definition
occurs after initial contact with antigen
Term
secondary response or amnestic response
Definition
occurs after second exposure
Term
naturally acquired active immunity
Definition
resulting from infection
Term
naturally acquired passive immunity
Definition
transplacental or cia colostrum
Term
artificially acquired active immunity
Definition
injection of antigen (vaccination)
Term
artificially acquired passive immunity
Definition
injection of antibody
Term
serology
Definition
the study of reactions between antibodies and antigens
Term
antiserum
Definition
the generic term for serum because it contains antibody
Term
globulins
Definition
serum proteins
Term
immunoglobulins
Definition
antibodies
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