Scheme of thymic T cell development in alpha-beta T cells

Schematic representation of T cell development in the thymus. The various stages of maturation include the DN stages (1, 2, 3, and 4), DP stage, and SP stage. The lower part of the figure indicates TCR2 rearrangements which correspond to each stage. The upper part of the figure demonstrates some of the receptors expressed at each stage of differentiation.