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Exam 5

Definitions

TermDefinition
Anaphylaxis Hypersensitivity reaction involving IgE antibodies, mast cells, basophils
Mast cells Cell type found throughout body contains histamine & other substances that stimulate vasodilation
Basophils Granulocyte/ Leukocyte Takes up basicdye Not phagocytic Receptor for IgE IC region
Degranulation Release of contents of secretory granules from mast cells or basophils during anaphylaxsis.
Histamine Subtance released by tissue cells that causes vasodilation. Capillary permeability, and smooth muscle contraction
Systemic Anaphylaxis Hypersensitivity reaction causing vasodilation & resulting in shock/anaphylactic shock
Desensitization Prevention of allergic-inflammatory responses
MHC Major Histocompatibiltiy Complex- Genes that code for histocompatibility antigens aka HLA
HLA Human leukocyte Antigen Complex, Human cell surface antigens
Privileged site Area of body or tissue that doesn't illicit an immune response
Stem cells Undifferentiated cell that gives rise to a variety of specialized cells
Autograft Tissue graft from one's self (self)
Isograft Tissue graft from a genetically identical source (Twin)
Allograft Tissue graft NOT from genetically identical donor (Not twin or self)
Xenotransplant Ation product- Tissue graft from another species/ xeongraft
Immune surveillance Body's immune response to cancer
Spectrum of activity Range of distinctly different types of microorgansims affected by an antimicrobial drug
Broad-spectrum antibiotic Effective against a wide range of both gram- & gram+ bacteria
Superinfection Growth of a pathogen that has developed resistance to an anti-microbial drug being used; growing of opportunistic pathogen
Bactericidal Kill microbes directly- Bactericide Antimicrobial drugs
Bacteriostatic Prevents microbes from growing (bacteriostasis)
Synergism Principle where the effectiveness of 2 drugs used simultaneously is greater that that of either of either drug used alone
Antagonism Two drugs are less effective than either alone. Competition among microbes
Extremophile Microbe organism that lives in environment extremes of temp, acidity, alkalinity, salinity or pressure
Symbiosis Living together of two different organisms or populations
Bioremediation Use of microbes to remove an environmental pollutant
Coliforms Aerobic or Faculatively anaerobic Gram- Non-endospohore forming Rod Shaped bacteria
Created by: arichardson_14