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Semin Immunol. 1997 Dec;9(6):389-96.

Dynamics of fine T-cell subsets during HIV disease and after thymic ablation by mediastinal irradiation.

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Department of Genetics, Stanford University, Stanford, CA 94305-5125, USA.


The T-cell compartment is considerably more complex than just CD4 and CD8 T cells. Indeed, we can identify dozens of functionally and phenotypically distinct subsets within the peripheral blood of humans. These subsets are differentially affected in diseases which may underly some of the functional defects attributable to the disease. In HIV disease, all thymic-derived T-cell populations are gradually lost at identical rates during late-stage disease progression, while unusual, perhaps extrathymically-derived T cells expand. This expansion may reflect an attempt on the part of the immune system to compensate for the significant insult of HIV infection to the host: the abrogation of normal thymopoiesis and T-cell homeostasis.

[Indexed for MEDLINE]

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