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24 Cards in this Set

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What is cell-mediated immunity?
involves T-Cells (specialized lymphocytes) that act against foreign organisms or tissues = like rejecting an organ
immunoglobulins are...
proteins
What are the 5 types of C regions on an antibody?
IgG
IgM
IgA
IgD
IgE
What is a vaccine?
Killed, inactivated, or attenuated (weakened) microorganisms, or toxoids, to induce artificially acquired active immunity.
development of disease
pathogenesis
colonization of the body by pathogens
Infection
Disease
An abnormal state in which the body is not functioning normally
Etiology
Study of the cause of a disease
Pathology
study of disease
how long is transient microbiota present?
Days weeks or months
How long is normal microbiota present?
Permanent colonization of the host
symbiosis is...
the relationship between normal microbiota and the host
commensalism (in microbiota)
one organism benefits, other unaffected
Mutualism
both organisms benefit
parasitism
one organism benefits at the expense of another
What kind or pathogens are some normal microbiota?
opportunistic
Normal microbiota protect the host by
occupying niches that pathogens might occupy

producing acids

producing bacteriocins
Probiotics
are live microbes applied to or ingested into the body, intended to exert a beneficial effect.
bacteriocins are:
an antimicrobial peptide produced by bacteria that kills other bacteria
WHy are Koch's postulates used?
to prove the cause of an infectious disease
incidence
Fraction of a population that contracts a disease during a specific time
Prevalence
Fraction of a population having a specific disease at a given time
Sporadic disease
disease that occurs occasionally in a population
T cells are involved in
cells mediated immunity