\name{getRatioProbes}
\alias{getRatioProbes}

\title{ Get the names of degradation control probes on the array }
\description{
  This function returns the probes names used for degradation control
  that are located on the given GeneChip.
}
\usage{
  getRatioProbes(object)
}

\arguments{
  \item{object}{ An object of class \code{"AffyBatch"} or \code{"ExpressionSet"} }
}

\value{
  An object of type \code{"character"} with all the Affymetrix
  degradation control probe names. 
}

\examples{
    library(yaqcaffy)
    ## load a dataset
    library(affydata)
    data(Dilution)
    getRatioProbes(Dilution)
}

\seealso{getSpikeProbes,getBioProbes}

\author{ Laurent Gatto }

\keyword{ misc }