Module Quiz 1
Mononuclear phagocytes participate in adaptive immunity responses in each of the following ways EXCEPT
Antigen-specific killing of virus-infected cells
Memory lymphocytes:
Are small resting lymphocytes
Which of the following effector molecules can be secreted by macrophages or T cells and function as "messenger molecules" for the immune system?
Cytokines
HIV suppresses immunity by causing which of the following?
Depletion of CD4 cells
Which of the following are antigen-presenting cells found only in the germinal centers of secondary lymphoid follicles?
Follicular dendritic cells
Which of the following is a unique property of the adaptive immune response?
Highly Diverse repertoire of receptor specificities for antigens
Antibodies and T lymphocytes are the respective mediators of which two types of immunity?
Humoral and cell mediated
Which of the following cytokines that can stimulate hematopoiesis?
IL-7
Which of the following best describes clonal expansion in adaptive immune responses?
Increased number of lymphocytes with identical specificities all derived from a single lymphocyte, expand when stimulated by a single antigen
Which of the following will NOT result in an acquired immunodeficiency?
Inherited defect in B cell maturation
Tissue macrophages are derived from which type of circulating blood cell?
Monocyte
Which of the following cell types do NOT have clonally distributed antigen receptors?
Natural killer cells
A vaccine administered may protect from infection the influenza virus one year but will not protect from a different influenza virus the following year? This illustrates which property of the immune system?
Specificity
Antigens that enter the blood are presented to lymphocytes in which of the following organs?
Spleen
Humans with DiGeorge Syndrome suffer from loss of which of the following cells?
T cells
The cortex of the thymus contains which of the following types of cells?
Thymocytes