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_____________is a political system in which power resides in one person or family and is passed from generation to generation through lines of inheritance.
Antigens
Substances or molecules that are recognized by the immune system and can evoke an immune response.
Thymus
A gland located behind the sternum and between the lungs that is involved in the development of the body's immune system, particularly in maturing T lymphocytes.
Pre-T Cells
Immature T cells that are in the process of developing into functional T cells, located in the thymus gland.
Functional Immune Cells
Cells of the immune system that are active in defending the body against pathogens and foreign substances.
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