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3 types vaccines
- Attenuated (live): weakened, results in mild infection
- Killed (inactivated)
- Toxoid: modified version of bacterial toxin (ie diptheria toxin)
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Type of immunity in which vaccinated individuals can infect those around them
Herd immunity
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Type of vaccine which requires multiple doeses b/c have few antigenic determinants
Toxoid Vaccine
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Technique which allows making of improved vaccines by putting diff org's (like bacteria's) genes into another, to become incorporated
Recombinant DNA technique
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Problems w/vaccinations
- Mild toxicity: most common
- Anaphylactic shock: allergic rxns
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What is passive immunization and when is it given?
- Performed antibodies
- Given when protection against recent infection or an ongoing disease is needed quickly (rabies, venomous bites)
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How are passive immunizations made?
Removing serum from infected human or animal donors & making an antiserum
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Part of antigen that antibody recognizes and binds to
Epitope
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Immune testing uses ______ ______ and diagnostic use of ______ _____ interactions in blood serum
- serology-study
- antigen-antibody
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Types of Immune (Serological) Testing
- Precipitation tests
- Agglutination tests
- Neutralization tests
- Complement fixation tests
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The study of immune rxns: antigen-antibody interactions
Serology
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Test which is based on idea that antigens and antibody mixed form large macromolecular complexes in the form of white bands; this happens in the body, causing inflammation, such as inflam of joints, heart, etc
Precipitation Test
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Test performed in lab to test for precipitates & detects soluble antigens (promotes phagocytosis)
Ouchterlony test
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Occurs due to cross-linking of antibodies w/particulate antigens, visible to naked eye
Agglutination
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Agglutination vs Precipatation
- Clumping of insoluble particles
- Clumping of soluble particles
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Prevents binding to target site
Neutralization
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Type of test done to test if an individual has been exposed to a virus
Neutralization test
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Type of test which uses antibody molecules that are linked to some molecular "label" that enables them to be easily detected; to detect antigens or antibodies
Labeled Antibody Test
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Examples of Labeled Antibody Tests
- Fluorescent antibody test
- ELISA
- Western blot test
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Test which labels cell w/antibody w/fluorescent colors, view on microscope
Fluorescent antibody test
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Test which identifies antibodies, which indicates:
-exposure & u made antibodies
-infection
-what type of infection (Qualitative)
-how much (Quantitative)
ELISA
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Increased _______ can indicate allergies or parasitic worm infection
eosinophils
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Bacterial diseases often show increase in ______ and in ________.
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Viral infections show increase in _______.
Lymphocytes
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4 types of Hypersensitivity
- Type I (immediate)
- Type II (cytotoxic)
- Type III (immune-complex mediated)
- Type IV (delayed or cell-mediated)
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Type of hypersensitivity which is localized or systemic which results from release of inflammatory molecules in response to an antigen
Develops w/in secs or mins
Type I (immediate)
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Type of hypersensitivity which results when own cells are destroyed by an immune response, often due to the combined activities of complement and antibodies; often is component of autoimmune diseases
Type II (Cytotoxic)
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2 Examples of Type II (cytotoxic) Hypersensitivity
- Ex: destruction of blood cells from incompatible transfusion
- Ex: destruction of fetal rb cells in hemolytic disease of a newborn
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______ (1st or 2nd) time getting incompatible blood transfusion will have violent rxn
2nd
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Antigen that is common to the rb cells of humans & which transports anions and glucose across the cytosplasmic membrane
Rh, antigen
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____ individuals have the Rh antigen on their rb cells while _____ individuals do not
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Anti-Rh serum drug which is given to Rh- pregnant women that destroys any fetal rb cells that may have entered the body, causing desensitization of the mother and subsequent pregnancies are safer
Rhogam
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Type of hypersensitivity that is due to the formation of antibody-antigen complexes (immune-complexes); attracts inflammation and can cause systemic or localized rxns
Type III (Immune-Complex Mediated)
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2 Examples of systemic Type III hypersensitivity
- Lupus: antibody against own DNA
- Rhematoid arthritis: antibody against joint components
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2 Examples of localized Type III hypersensitivity
- Hypersensitivity pneumonitis
- Glomerulonephritis
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Immune complexes circulating in the bloodstream are deposited on the walls of glomeruli of kidneys, damaging the glomerular cells which impedes blood filtration, which results in kidney failure
(Inflammation & release of chemicals that destroy bvs in kidneys)
Glomerulonephritis
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