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EMBRYONIC DEVELOPMENT & STEM CELL COMPENDIUM
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All in Vivo Cells > Cell Card
Thymus
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Thymus
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Double Negative 3 Thymocytes (Thm)


Thm.Thm.DN3
At the DN3 stage (CD25+, CD44-), there is initiation of VDJ rearrangement of the beta chain of the T cell receptor (TCR). Cells that undergo in-frame rearrangement, express the pre-T-cell alpha chain hence assembling a pre-TCR are selected for further maturation.
Prenatal - Postnatal
DN3
Double Negative 3 Thymocytes
Multiple Ancestors Single Ancestor No Descendants Develops from Part of Parent