#thymic_nurse_cell
Thymic nurse cell
Thymic nurse cells (TNCs) are large epithelial cells found in the cortex of the thymus and also in cortico-medullary junction. They have their own nucleus and are known to internalize thymocytes through extensions of plasma membrane. The cell surfaces of TNCs and their cytoplasmic vacuoles express MHC Class I and MHC Class II antigens. The interaction of these antigens with the developing thymocytes determines whether the thymocytes undergo positive or negative selection.
Wed 4th
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