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Questions and Answers
What is the major role of T lymphocytes?
How do some intracellular bacteria and protozoa survive in phagocytes?
What is the role of T cells in infections with intracellular microbes?
Where do B cells mature?
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What is the function of primary lymphoid organs?
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Which organ is not considered a secondary lymphoid organ?
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What is the role of lymphatic vessels?
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What happens to the lymph as it travels through lymphatic vessels?
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Study Notes
T Lymphocytes
- T lymphocytes play a major role in cell-mediated immunity, recognizing and eliminating infected cells and presenting antigens to other immune cells.
Intracellular Microbes
- Some intracellular bacteria and protozoa can survive in phagocytes by preventing phagosome maturation or by escaping into the cytosol.
T Cells and Intracellular Infections
- T cells recognize and eliminate infected cells, producing chemical signals that activate other immune responses to combat intracellular infections.
B Cell Maturation
- B cells mature in the bone marrow.
Primary Lymphoid Organs
- Primary lymphoid organs, such as the bone marrow and thymus, are responsible for the production and maturation of immune cells.
Secondary Lymphoid Organs
- The brain is not considered a secondary lymphoid organ.
Lymphatic Vessels
- Lymphatic vessels transport lymph, a clear fluid containing immune cells, throughout the body, playing a crucial role in the immune response.
Lymphatic System Function
- As lymph travels through lymphatic vessels, it is filtered and immune responses are activated, allowing for the recognition and elimination of pathogens and foreign substances.
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Description
Test your knowledge of T lymphocytes' role in cell-mediated immunity and their function in defending against intracellular microbes. Explore how T cells stimulate the microbicidal activities of phagocytes in infections.
