\name{retrievePSRseq1gid}
\alias{retrievePSRseq1gid}
\title{This function, given a gene-level probeset id, retrieves Probe selection Regions, 
PRS, from RRE db}
\description{
This function retrieves from RRE the PSR sequences associated to exon-level probe sets
}
\usage{
retrievePSRseq1gid()
}
\author{Raffaele A Calogero}
\keyword{ manip }