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Thymus Gland
An endocrine gland that functions as part of the lymphatic system; processes T cells; important in cell-mediated immunity.
T Cytotoxic Cells
A type of T cell (a form of white blood cell) that kills cancer cells, cells that are infected (particularly with viruses), or cells that are damaged in other ways.
T Helper Cells
A type of white blood cell that plays a crucial role in the immune system by signaling other cells to perform their functions.
B Cells
A type of white blood cell that is part of the immune system, producing antibodies to fight off infections.
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