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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

what type of immunity results from recovery from mumps?

naturally acquired active immunity

Which of the following is the best definition of epitope?

specific regions on antigens that interact with antibodies

which of the following cells is NOT an APC?

natural killer cells

when an antibody binds to a toxin, the resulting action is referred to as

neutralization

CD4+ T cells are activated by

interaction between CD4+ and MHC II or interaction between TCRs and MHC II

The specificity of an antibody is due to

the variable portions of the H and L chains

In addition to IgG, the antibodies that can fix complement are

IgM

The most abundant class of antibodies in serum is

IgG

The presence of which of the following indicates a current infection rather than a previous infection or vaccination?

IgM

Cytokines released by TH1 cells

actuvate CD8+ cells to CTLs (cytotoxic T cells)

A Treg cell deficiency could result in

autoimmunity

Some antibodies can be produced without T helper cells

True

NK cells recognize only those cells expressing low levels of MHC 1 due, for example, to infection with a virus

True

In inflammation, the release of ______ kinens, and progestaglandins causes vasodilation and increased permeability of blood vessels

histamines

complement activation can result in cell lysis, opsonization, and

inflammation

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

interferon

immunity resulting from ____ is called artificially acquired active immunity

vaccination

serum containing antibodies is often called ___

antiserum

the ____ immune system involves antibodies produced by B cells (plasma cells)

humoral

antibodies are formed against specific regions on the surface of an antigen called

antigenic determinants

IgE antibodies bind to mast cells and ____ and are involved in allergic reactions

basophils

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 __-

IgM

Localized ___ is exemplified by hives, hay fever, and asthma

anaphylaxis

in the disease ___ platelets are destroyed by antibodies and complement

thrombocytopenic purpura

___ 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

__ is secreted as a dimer in mucus and saliva

IgA

Exotoxins are generally more potent (toxins) than endotoxins

true

administration of gamma-globulin is an example of artificial passive immunity

true

complement can aid phagocytosis

true

immunity due to injection of tetanus toxoid is an example of artificially acquired active immunity

true

B cells originate in bone marrow

true

glomerulonephritis is an immune complex disease

true

allergic contact dermatitis is due to

sensitized T cells

the complement fixation test uses sheep red blood cells

true

the indirect ELISA is useful for determining the presence of HIV (AIDS) antibodies

true

dendrites and __ are the most important antigen-presenting cells

macrophages

Patient's serum, influenza virus, and red blood cells are mixed in a tube. What happens if the patient has antibodies against influenza virus?

hemagglutination

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

EMB agar is selective and differential medium

true

fecal coliforms form blue colonies on m-FC medium

true- elevated temp

greater than 1,000 baceria/ml of urine is indicative of infection of the urinary tract

false- 100,000

.45 um membrane filters remove bacteria from a solution

true

e coli ferments

lactose

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

which gives you more information
EC-MUG
BGLB

EC-MUG- tells you e coli present

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