As one Mediathon follows another with greater and greater velocity -- whether war, scandal, crime or game-show stunt -- it's inevitable that they all blur together, at the same disposable level of popcorn entertainment, leaving no more permanent trace on the national consciousness than last year's hit summer movie.
"It only takes seconds of exposure to such graphic material to leave a permanent trace - particularly in a young person's mind," said Dr Arthur Cassidy, a former psychologist who runs a branch of the Yellow Ribbon Program in Northern Ireland.
In order to test whether tissues that form the telencephalon and face derive from dbx1-expressing progenitors but no longer express dbx1 mRNA, we used permanent tracing to follow the progeny of dbx1-expressing cells.
Ngn3CreERT R26YFP mice were generated to evaluate possible contribution of progenitors to β cell growth by permanent tracing of cells with activated Ngn3 and descendants thereof.
A permanent exhibit traces the history of American advertising from 1704 to the present.
Analysing Interferometer for Ambient Air (ANITA) is a flight experiment as precursor for a permanent continuous trace gas monitoring system on the International Space Station (ISS).
In the absence of integrated Advanced Life Support systems on orbit, permanent gas, trace volatile organic and microbiological analyses were performed on crew refuse returned from the volume F "wet" trash of three consecutive Shuttle missions (STS-105, 109, and 110).
Permanent genetic tracing of cells that activated Ngn3 gene expression detected up to 40% of label+ β cells in small clusters in PDL.
As no permanent lineage tracing can yet be done in our system, it is impossible to know the terminal fates of individual cells and whether these piwi-1+ progenitors self-renew.
