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MHC class 1 mol. are associated with
Tc cell interaction with virally infected host cells
B cell interaction with antigen-presenting cells
Th cell interaction with antigen-presenting cells
B cell interaction with Th cells
The characteristics of antigen are:
non immunogenicity
specificity
foreign origin
antigenicity
Allergic urticarial is a manifestation of:
Tc cells
an IgE-mediated disorder
an immune complex-mediated disorder
delayed hypersensitivity
Which of the following are considered to be privileged tissues for grafting:
fetus
bone marrow
cornea
bone
Which Ab class is abundant in body secretions?
IgG
IgA
IgE
IgD
Inflammation:
slows the spread of pathogens
aids in temporary repair at an injury site
facilitates permanent repair
all of the above
Which of the following is NOT part of the body’s non-specific defense system?
phagocytosis by macrophages
phagocytosis by neutrophils
inflammation
antibodies
IL-2, produced by Th cells:
activates antigen-presenting cells
activates macrophages
causes phagocytosis
stimulates Tc cells
The specificity of an antibody is due to:
the light chains
the heavy chains
the variable regions of the heavy and light chains
the constant regions of the heavy and light chains
Which of the following are the effects of complement activation?
opsonization
interference with viral replication
increased phagocytic activity
bacterial cell lysis
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