Such T-cell receptor excision circles (TRECs
) and K-deleting recombination excision circles (KRECs), as circularized DNA elements, are formed during the fusion process that creates T- and B-cell receptors [7, 8].
Levels of T cell receptor excision circles (TRECs
) according to age groups.
That's because the state now allows electric utilities to meet their renewable energy portfolio standards by purchasing the TREC
Pilot newborn screening done in Wisconsin last year identified a TREC
number of less than 75 per dried blood spot as a signal of SCID.
The distribution of copy numbers among infants in neonatal intensive care units (NICU) and nonNICU infants showed that a higher proportion of NICU infants had low numbers of TRECs
than non-NICU infants (Fig.
A low TREC
number implies abnormal thymic function.
Puck of the University of California, San Francisco, measures T-cell receptor excision circles (TRECs
) using a polymerase chain reaction (PCR) process in samples of dried blood spots commonly taken from infants that are used for other screening purposes.
A similar pattern was observed when RPP30 and TRECs
were quantified by the TaqMan assay (data not shown).
are stable circular DNA fragments generated during T-cell receptor rearrangement.
* Collaborate with partners to review data regarding population-based normal ranges of T-calls, CD[4.sup.+] cells, and TRECS
A third group from the Gladstone Institute of Virology and Immunology in San Francisco (Abstract 188) found that trends exist between thymic mass (which can increase in some individuals during HIV infection) and levels of T cell receptor excision circles (TRECs