Thymus Gland Lobule Detail

The pink epithelioreticular cell network forms a cytoplasmic framework for thymic lymphocytes.

The darker purple area (cortex) contains many immature T -lymphocytes which will go through selection or "education" of lymphocytes. This is the first step in making T cells immunocompetent or able to distinguish self antigens from foreign antigens.

The lighter purple area (medulla) contains larger more mature T-lymphocytes going through the final selection stage.

Click on the green square to see the cellular detail.

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