T-Cell Boot Camp: Surviving the Thymus
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T-Cell Boot Camp: Surviving the Thymus
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Welcome to the ultimate "T-Cell Boot Camp." In this episode, we follow the high-stakes journey of immune cells as they migrate from their "birth" in the bone marrow to the thymus for a rigorous education.
We dive deep into the two critical exams that determine their fate:
- Positive Selection: Taking place in the thymic cortex, cells must prove they can recognize and bind self-MHC appropriately or face death by neglect.
- Negative Selection: Occurring in the thymic medulla, this "test" ensures cells do not bind self-antigen too strongly, preventing autoimmunity by eliminating self-reactive candidates through Fas-FasL mediated apoptosis.
Join us as we explore how this elite training process results in mature naïve CD4⁺ and CD8⁺ T-cells that are perfectly equipped to recognize the body's MHC molecules without attacking its own tissues.
Media: https://drive.google.com/file/d/1QDmLepTIENq25Sj_W2kIKj97uG5y_mg5/view?usp=share_link
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