MHC class 1 mol. are associated with
Tc cell interaction with virally infected host cells
Th cell interaction with antigen-presenting cells
B cell interaction with antigen-presenting cells
B cell interaction with Th cells
The characteristics of antigen are:
foreign origin
non immunogenicity
specificity
antigenicity
Allergic urticarial is a manifestation of:
an IgE-mediated disorder
delayed hypersensitivity
an immune complex-mediated disorder
Tc cells
Which of the following are considered to be privileged tissues for grafting:
cornea
bone marrow
fetus
bone
Which Ab class is abundant in body secretions?
IgA
IgD
IgE
IgG
Inflammation:
aids in temporary repair at an injury site
slows the spread of pathogens
facilitates permanent repair
all of the above
Which of the following is NOT part of the body’s non-specific defense system?
inflammation
phagocytosis by neutrophils
phagocytosis by macrophages
antibodies
IL-2, produced by Th cells:
activates macrophages
stimulates Tc cells
causes phagocytosis
activates antigen-presenting cells
The specificity of an antibody is due to:
the heavy chains
the light chains
the constant regions of the heavy and light chains
the variable regions of the heavy and light chains
Which of the following are the effects of complement activation?
bacterial cell lysis
opsonization
increased phagocytic activity
interference with viral replication
Cytokines are soluble mediators of immune reactions.
Lymphocytes are large agranulocytes.
Interferon is produced by viruses.
T cells originate from stem cells in the bone marrow.
B cells recognize the Ag in a processed from.
Protooncogenes are mutated genes.
Tumor-specific antigens are non-immunogenic.
Tumor-associated antigens are typical of tumor cells only.
Follicular dendritic cells are APC.
Abs exert direct cytolysis.
Label the dots
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