Medical Microbiology

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6 Terms

1
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Vaccine

antigens (proteins, etc.) introduced into body to
elicit a specific immune response for prophylaxis, post-
exposure, or disease treatment (e.g., cancer, drug addiction)

2
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antigen-presenting cells (APC)

presenting a pathogen’s
antigens to Helper T cells (Th) that, in turn, activate other
immune cells (T and B cells)

3
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Plasma B cells

produce antibodies to neutralize
pathogens (preventing them from associating with cells)
and label them for destruction

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Killer T cells

rid body of labeled pathogens

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Memory T and B cells


remember how to fight the
specific pathogen during subsequent infections

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Mutations and/or recombination ➟

mmune evasion
(↑ opportunity in unvaccinated hosts)