\name{refseqDownload}
\alias{refseqDownload}
\title{Retrieving Reference Sequences from NCBI ftp}
\description{
This function retieves refeence sequences from NCBI ftp. RefSeq are used for mapping exon-level probe sets to refseq specific isoforms.}
\usage{
refseqDownload()
}
\author{Raffaele A Calogero}
\keyword{ manip }