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This course provides an in-depth look at the journey of T cell maturation within the thymus. Starting with the formation of thymocytes, the course explores the distinct stages of thymocyte development, including their double negative and double positive characteristics. It delves into the externalization of surface receptors as thymocytes traverse the thymic cortex and medulla, where critical processes of positive and negative selection occur.
Students will gain a comprehensive understanding of the mechanisms behind positive selection in the thymic cortex, which ensures that thymocytes can properly recognize self-MHC molecules, and negative selection in the medulla, which eliminates thymocytes that react too strongly to self-antigens. The course also covers how a thymocyte transitions from double positive to single positive, resulting in the release of functional T cells into the immune system.
Additionally, the course examines the macroscopic anatomy of the thymus gland and its microscopic histological features to better understand the structural environment that supports T cell maturation. By the end of the course, students will have a clear understanding of the processes that lead to the development of effective, self-tolerant T cells.
- Antigens of different T cells.
- Positive and negative selection.
- Immunology part 7
- T cell maturation journey through different zones of thymus.
- Formation of a thymocyte.
- Double negative character of the thymocyte
- Externalization of surface receptors on thymocyte traversing through different zones.
- Macroscopic anatomy of the thymus gland
- Microscopic anatomy and histology of thymus gland.
- Formation of a thymocyte.
- Journey of a thymocyte through thymus.
- Release of selected T cells.
- The process of T cell selection after maturation.
- Double positive and double negative character of a T cell/thymocyte.
- Mechanism of positive selction in the cortex.
- Mechanism of negative selection in the medulla.
- How a thymoyte changes from double positive to single positive.
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