Microbiology and Immunology 2500A/B Study Guide - Midterm Guide: Necrosis, Hydrophile, Blood Type
4 Jan 2017
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Types of immune responses: innate immunity, adaptive immunity, passive immunity = transient immunity. Passive immunity: provide immediate short term immunity (<1 year) Immunity is acquired from another individual via the transfer of antibodies: natural maternal antibodies, artificial antibodies from other sources. Passive immunity present: maternal antibodies are transferred via: placenta to fetus (in utero) wanes in ~10 months, breast milk to newborn. Adaptive immunity undeveloped = need to be exposed to the pathogen. The first line of defense against a pathogen. It is constantly ready to destroy a pathogen = effective at stopping majority of pathogens at early stage. Defenses: barriers block pathogen entry into tissues, innate cells and soluble molecules rapidly eliminate pathogens that enter tissue. *if innate immune system is unsuccessful certain innate cells initiate the adaptive immune system to eliminate the pathogen. *vertebrates have both adaptive and immune systems (invertebrates don"t have it)
