Early commitment: T cell progenitors in the blood

Academic Article
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publication date

  • January 2007

abstract

  • Thymic lymphopoiesis depends on blood-borne, marrow-derived progenitors, but characterization of these cells, and their lineage potentials, has been difficult. In this issue, Krueger and von Boehmer show some blood cells that are already T lineage restricted, suggesting that T lineage commitment can occur pre-thymically.