and Cell-Mediated Responses, B-Cell and T-Cell Differentiation, Lymphoid Organ
Function, Phagocytosis, Antigen Recognition, Cytokine Signaling, Pattern
Recognition Receptors, PRR-Mediated Innate Responses, Complement
Activation, NK Cell Cytotoxicity, Hypersensitivity Reactions, Autoimmunity,
Immunodeficiency Disorders, SCID, Vaccine-Induced Protection, Herd Immunity,
Tolerance Mechanisms, Clonal Selection Theory, Germinal Center Dynamics,
Memory Cell Formation, Adjuvant Effects, Haptens, Immunoglobulin Class
Switching, Fc Receptor Functions, Th1/Th2/Th17 Regulation, Mast Cell
Activation, Eosinophil and Basophil Roles, Chemokine-Mediated Recruitment,
and Clinical Applications in Sepsis, Allergic Responses, and Transplant
Immunology Exam Questions Verified and Provided with Complete A+ Graded
Rationales Latest Updated 2026
Which of the following generally does not apply to bone marrow (a primary lymphoid organ)
and secondary lymphoid organs?
A) cellular proliferation
B) differentiation of lymphocytes
C) cellular interaction
D) antigen-dependent response
E) None of the above.
D
Which of the following apply uniquely to secondary lymphoid organs?
,A) presence of precursor B and T cells
B) circulation of lymphocytes
C) terminal differentiation
D) cellular proliferation
E) All of the above.
C
Which of the following does not apply to "innate" immune mechanisms?
A) absence of specificity
B) activation by a stimulus
C) involvement of multiple cell types
D) a memory component
D
Which of the following is the major function of the lymphoid system?
A) innate immunity
B) inflammation
C) phagocytosis
D) acquired immunity
E) None of the above.
, D
Removal of the bursa of Fabricius from a chicken results in
A) a markedly decreased number of circulating T lymphocytes.
B) anemia.
C) delayed rejection of skin graft.
D) low serum levels of antibodies in serum.
E) all of the above.
F) none of the above.
D
The germinal centers found in the cortical region of lymph nodes and the peripheral region of
splenic periarteriolar lymphatic tissue
A) support the development of immature B and T cells.
B) function in the removal of damaged erythrocytes from the circulation.
C) act as the major source of stem cells and thus help to maintain hematopoiesis.
D) provide an infrastructure that on antigenic stimulation contains large populations of B
lymphocytes and plasma cells.
E) are the sites of NK-cell differentiation.
D
Which of the following is correct?