Order Immunology Discussion Assignment

Order Immunology Discussion Assignment
Order Immunology Discussion Assignment
The following subset of cells in humans carry surface molecules that have been identified by monoclonal antibody
OKT8 (Leu-2)
Se ere
helper T cells
suppressor T cells
B cells
plasma cells
The reaction that occurs when antibody and soluble antigen
are mixed is demonstrated by the
agglutination test
precipitin test
adsorption test
hemagglutination test
none of the above
In the complement-fixation test
e >
amount of complement is not important
sensitized red cells are added to determine whether
complement has been fixed
nature of the antigen is important
serum control is not necessary
the use of a control specimen is not necessary
24 / Microbiology
The principal events in cellular interaction in the immune
response include the following EXCEPT
A. macrophages carry antigen on their surface and present
it to T lymphocytes
B. helper T cells permit activation of B cells
C. B cells become antibody-producing plasma cells
D. helper T cells enable other T cell subsets to become
specifically activated to initiate cell-mediated immune
E. helper T cells modulate the response of both B and T
cell subsets to regulate the magnitude of effect
In comparison with the primary antibody response, the secondary response is characterized by a
A. higher threshold dose of immunogen
B. longer lag phase
C. longer persistence of antibody synthesis
D. lower antibody titer
E. lower rate of antibody synthesis
Antibodies that render the antigenic infective agent noninfective are referred to as
A. agglutinins
B. precipitins
C. opsonins
D. neutralizing antibodies
E. complement-fixing antibodies
Anaphylaxis ts
A. the most rapid hypersensitivity reaction of the immediate type
B. always systemic
C. characterized by an explosive response occurring within
hours of the challenging dose
D. always localized (cutaneous)
E. none of the above
Immunology / 25
Peripheral portions of the lobule (cortex) of the thymus are
heavily infiltrated with
lymphocytes mSOR> monocytes
The clinical manifestations of cellular immunity (delayed
hypersensitivity) include all of the following EXCEPT
. graft rejection
autoimmune disease
contact hypersensitivity
tumor rejection moOR> Arthus reaction
When peritoneal exudate cells from sensitized animals are
put into a capillary tube, the macrophages that normally
migrate peripherally from the end of the tube are inhibited
in the presence of the sensitizing antigen. This phenomenon
due to a mitogenic factor
due to the migration-inhibitory factor (MIF)
due to a specific antibody Pp SOOR due to antigen-antibody complex
Of the following substances, the establishment of tolerance
is more difficult with
synthetic polypeptides
particulate antigens SEES AOE haptenic groups
Contact dermatitis can typically be caused by all of the following EXCEPT
plants (poison ivy)
metals Ser eles infectious agents
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