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Questions and Answers
B lymphocytes and T lymphocytes are located in the same area within a primary lymphoid organ (PLO).
B lymphocytes and T lymphocytes are located in the same area within a primary lymphoid organ (PLO).
False
The segregation of B and T lymphocytes allows for tight regulation and development of immune cells through chemokines from dendritic cells.
The segregation of B and T lymphocytes allows for tight regulation and development of immune cells through chemokines from dendritic cells.
True
B lymphocytes express the CXCR7 receptor, while T lymphocytes express the CCR5 receptor.
B lymphocytes express the CXCR7 receptor, while T lymphocytes express the CCR5 receptor.
False
Lymphocytes activate and migrate towards the edge of the follicle.
Lymphocytes activate and migrate towards the edge of the follicle.
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Helper T cells interact with B cells to differentiate them into red blood cells.
Helper T cells interact with B cells to differentiate them into red blood cells.
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Natural Killer Cells recognize and kill infected cells by secreting the cytokine IFN - α.
Natural Killer Cells recognize and kill infected cells by secreting the cytokine IFN - α.
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Mast Cells are activated by microbial products binding to TLRs in the cytoplasmic granules.
Mast Cells are activated by microbial products binding to TLRs in the cytoplasmic granules.
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Innate Lymphoid Cells (ILCs) express T cell antigen receptors for antigen recognition.
Innate Lymphoid Cells (ILCs) express T cell antigen receptors for antigen recognition.
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Th2 cells are induced by extracellular bacteria and fungal infections.
Th2 cells are induced by extracellular bacteria and fungal infections.
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Helper T cells interact with Natural Killer Cells to enhance the killing of infected cells.
Helper T cells interact with Natural Killer Cells to enhance the killing of infected cells.
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Activated Mast Cells release histamines that cause vasoconstriction and reduce capillary permeability.
Activated Mast Cells release histamines that cause vasoconstriction and reduce capillary permeability.
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Neutrophils are the first to respond to most infections, but they do not provide prolonged defense.
Neutrophils are the first to respond to most infections, but they do not provide prolonged defense.
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Monocytes/Macrophages are able to differentiate into two distinct pathways: Classical Macrophage Activation and Alternative Macrophage Activation.
Monocytes/Macrophages are able to differentiate into two distinct pathways: Classical Macrophage Activation and Alternative Macrophage Activation.
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Dendritic cells only produce cytokines in response to microbes, but they do not respond to microbes in any other way.
Dendritic cells only produce cytokines in response to microbes, but they do not respond to microbes in any other way.
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Intraepithelial T lymphocytes are not considered part of the innate immune system.
Intraepithelial T lymphocytes are not considered part of the innate immune system.
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The complement system, which includes products of complement activation, is not part of the innate immune system.
The complement system, which includes products of complement activation, is not part of the innate immune system.
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Monocytes/Macrophages have a higher circulating count than neutrophils in the blood.
Monocytes/Macrophages have a higher circulating count than neutrophils in the blood.
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