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What type of immunity results from the transfer of antibodies from one individual to a susceptible individual by means of injection?
artificially acquired passive immunity
Which of the following is the best definition of epitope?
specific regions on antigens that interact with antibodies
CD4+ T cells are activated by
interaction between CD4+ and MHC II or interaction between TCRs and MHC II
The presence of which of the following indicates a current infection rather than a previous infection or vaccination?
NK cells recognize only those cells expressing low levels of MHC 1 due, for example, to infection with a virus
In inflammation, the release of ______ kinens, and progestaglandins causes vasodilation and increased permeability of blood vessels
lysozyme and ____ are found on the skin and are part of the "first line of defense"
unsaturated fatty acids
alpha- and beta- _____ are produced by virus infected cells and prevent virus replication in uninfected cells
antibodies are formed against specific regions on the surface of an antigen called
the response of the body to the first contact with an antigen is called the primary response. It is characterized by the initial appearance of __-
___ is a type II autoimmune disease involving the reaction of antibodies to thyroid receptors
graves disease- type 2
__ is a type IV autoimmune disease involving T cell attack on the thyroid
Hashimoto's disease - type 4
transplants recognized as foreign antigens may be lysed by __ and attacked by macrophages and complement fixing antibodies
cytotoxic T cells
immunity due to injection of tetanus toxoid is an example of artificially acquired active immunity
Patient's serum, influenza virus, and red blood cells are mixed in a tube. What happens if the patient has antibodies against influenza virus?
a DNA plasmid encoding a protein antigen from West Nice virus is injected into muscle cells of a horse. this is an example of:
nucleic acid vaccine
greater than 1,000 baceria/ml of urine is indicative of infection of the urinary tract
if you had 48 colonies on a plate where you plated .1 ml from a 10^-4 dilution, the final report would be ___ CFU's/gram (think of the food plate counts)
4.8 X 10^-6
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