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Thymic output: a bad TREC record

TREC assays are used to detect recent thymic emigrants and quantitate thymic output. However, the longevity of naive T cells combined with T cell division suggest TREC data should be interpreted with caution.

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Figure 1: Schematic representation of changes in TREC levels in response to changes in thymic function or T cell division.
Figure 2: Schematic representation of peripheral blood TREC reconstitution following stem cell transplantation.

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Acknowledgements

We would like to thank H. Schuitemaker for critical reading of the manuscript.

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Correspondence to Frank Miedema.

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Hazenberg, M., Borghans, J., de Boer, R. et al. Thymic output: a bad TREC record. Nat Immunol 4, 97–99 (2003). https://doi.org/10.1038/ni0203-97

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