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Cytokine production and requirements during T-cell development
1Immunology Department, DNAX Research Institute of Molecular and Cellular Biology, Palo Alto, CA 94304-1104, USA.
Cytokines have been presumed to play an important role during T-cell development, but until recently formal proof has been missing. Most cytokine-knockout mice show apparently normal intrathymic T-cell development. The exception to this is IL-7, as both IL-7 and IL-7R alpha knockout mice show abnormally low thymic cellularity, making IL-7 the first cytokine shown to be necessary for normal intrathymic T-cell development.
Cytokines have been presumed to play an important role during T-cell development, but until recently formal proof has been missing. Most cytokine-knockout mice show apparently normal intrathymic T-cell development. The exception to this is IL-7, as both IL-7 and IL-7R alpha knockout mice show abnormally low thymic cellularity, making IL-7 the first cytokine shown to be necessary for normal intrathymic T-cell development.