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Clinical Immunology and Serology A Laboratory
Perspective EXAM COMPLETE QUESTIONS AND
CORRECT VERIFIED ANS WERS LATEST UPDATE JUST
RELEASED THIS YEAR
Question: After exposure to antigen, the first antibodies that can be detected belong to the
class
A. IgA
B. IgE
C. IgG
D. IgM - CORRECT ANSWER✔✔D. IgM
D. The first B cells to respond to antigen differentiate into plasma cells that produce IgM
antibody. Later in the immune response, stimulated B cells undergo a phenomenon called "class
switching" and begin to produce antibodies of the IgG, IgA, and IgE classes. High concentration
of IgM in patient serum is indicative of a recent infection.
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Question: Corneal tissue may be transplanted successfully from one patient to another
because
A. The cornea is nonantigenic
B. Corneal antigens do not activate T cells
C. Anticorneal antibodies are easily suppressed
D. The cornea occupies a privileged site not usually seen by the immune system - CORRECT
ANSWER✔✔D. The cornea occupies a privileged site not usually seen by the immune system
D. Corneas are readily transplanted from one individual to another. This is because the cornea is
nonvascularized and is a sequestered site. Thus the immune system of the host does not "see"
the cornea and recognize it as foreign
Question: A kidney transplant from one identical twin to another is an example of a(n)
A. Allograft
B. Autograft
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C. Isograft
D. Xenograft - CORRECT ANSWER✔✔C. Isograft
C. Identical twins have the same genetic makeup. Grafts between them would be isografts or
syngeneic grafts. Autografts are transplantations from one site to another in the same
individual. Xenograft refers to transplantation between different species. Transplantation
between two nonidentical individuals of the same species is called an allograft.
Question: In Bruton disease, measurement of serum immunoglobulins would show
A. Elevated levels of IgE
B. Elevated levels of IgG
C. Normal levels of IgG and IgM but reduced levels of IgA
D. The absence of all immunoglobulins - CORRECT ANSWER✔✔D. The absence of all
immunoglobulins
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SUCCESS!
Clinical Immunology and Serology A Laboratory
Perspective EXAM COMPLETE QUESTIONS AND
CORRECT VERIFIED ANS WERS LATEST UPDATE JUST
RELEASED THIS YEAR
Question: After exposure to antigen, the first antibodies that can be detected belong to the
class
A. IgA
B. IgE
C. IgG
D. IgM - CORRECT ANSWER✔✔D. IgM
D. The first B cells to respond to antigen differentiate into plasma cells that produce IgM
antibody. Later in the immune response, stimulated B cells undergo a phenomenon called "class
switching" and begin to produce antibodies of the IgG, IgA, and IgE classes. High concentration
of IgM in patient serum is indicative of a recent infection.
1
SUCCESS!
,Page 2 of 27
Question: Corneal tissue may be transplanted successfully from one patient to another
because
A. The cornea is nonantigenic
B. Corneal antigens do not activate T cells
C. Anticorneal antibodies are easily suppressed
D. The cornea occupies a privileged site not usually seen by the immune system - CORRECT
ANSWER✔✔D. The cornea occupies a privileged site not usually seen by the immune system
D. Corneas are readily transplanted from one individual to another. This is because the cornea is
nonvascularized and is a sequestered site. Thus the immune system of the host does not "see"
the cornea and recognize it as foreign
Question: A kidney transplant from one identical twin to another is an example of a(n)
A. Allograft
B. Autograft
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C. Isograft
D. Xenograft - CORRECT ANSWER✔✔C. Isograft
C. Identical twins have the same genetic makeup. Grafts between them would be isografts or
syngeneic grafts. Autografts are transplantations from one site to another in the same
individual. Xenograft refers to transplantation between different species. Transplantation
between two nonidentical individuals of the same species is called an allograft.
Question: In Bruton disease, measurement of serum immunoglobulins would show
A. Elevated levels of IgE
B. Elevated levels of IgG
C. Normal levels of IgG and IgM but reduced levels of IgA
D. The absence of all immunoglobulins - CORRECT ANSWER✔✔D. The absence of all
immunoglobulins
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