Tag: <span>Adaptive Immune System</span>

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On the Aging Adaptive Immune System
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On the Aging Adaptive Immune System

An interesting fact about the adaptive immune system: the number of T cells in the body remains much the same across the entire lifespan, even after the supply of new T cells all but ceases in middle age. T cells are created as thymocytes by hematopoietic cells in the bone marrow, and then mature in...