Unit 3 Vocab Flashcards
(60 cards)
agglutination
the aggregation by antibodies of suspended cells or similar size particles into clumps that settle
allograft
relatively compatible tissue exchange between nonidentical member of the same species
anamnestic response
an augmented response or memory related to a prior stimulation of the immune system by antigen
boosts levels of immune substances
antibiotic
a chemical substance from one microorganism that can inhibit or kill another microbe even in minute amounts
antibody
a large protein molecule evoked in response to an antigen that interacts specifically with the antigen
antigen
any cell, particle, or chemical that induces a specific immune response by b cells or t cells and can stimulate resistance to an infection or a toxin
attenuate
to reduce the virulence of a pathogenic bacterium or virus by passing it through a nonnative host or by long term subculture
broadsprectrum
denotes drugs that have an effect on a wide variety of microorganisms
cephalosporins
a groud of broad spectrum antibiotics isolated from the fungus cephalosporium
complement
serum protein components that act in a definite sequence when set in motion either by an antigen-antibody complex or by factors of the alternative pathway
cytokine
a chemical substance produced by white blood cells and tissue cells that regulates development, inflammation and immunity
desensitization
a therapeutic exposure to known allergens designed to build tolerance and eventually prevent allergic reaction
diabetes mellitus
a disease involving compromise in insulin function. in one form, the pancreatic cells that produce insulin are destroyed by autoantibodies; in another, the pancreas does not produce sufficient amounts of insulin
dichotomous key
flow charts that offer two choices or pathways at each level
edema
the accumulation of excess fluid in cells, tissues, or serous cavities
ELISA
enzyme linked immunosorbent assay, a very sensitive serological test used to detect antibodies in diseases
epitope
the precise molecular group of antigen that defines its specificity and triggers the immune response
herd immunity
the status of collective acquired immunity in a population that reduces the likelihood that nonimmune individuals will contract and spread infection
histamine
a cytokine released when mast cells and basophils release their granules
smooth muscle contraction, increased vascular permeability, and increased mucus secretion
hybridization
a process that matches complementary strands of nucleic acid
help find specific sites or types of nucleic acids
immunity
an acquired resistance to an infectious agent due to prior contact with that agent
incidence
in epidemiology, the number of new cases of a disease occurring during a period
inflammation
a natural, nonspecific response to tissue injury that protects the host from further damage. it stimulates immune reactivity and blocks the spread of an infectious agent
interferon
natural human chemical that inhibits viral replication; used therapeutically to combat viral infections and cancer