\HeaderA{SpikeIn}{Affymetrix SpikeIn Experiment Data}{SpikeIn}
\aliasA{SpikeIn133}{SpikeIn}{SpikeIn133}
\aliasA{SpikeIn95}{SpikeIn}{SpikeIn95}
\keyword{datasets}{SpikeIn}
\begin{Description}\relax
Probe-level data for data from the HGU95 and HGU133 SpikeIn experiments.
\end{Description}
\begin{Usage}
\begin{verbatim}
data(SpikeIn95)
data(SpikeIn133)
\end{verbatim}
\end{Usage}
\begin{Format}\relax
Both \code{SpikeIn95} and \code{SpikeIn133} are instances of
the  \code{\LinkA{AffyBatch}{AffyBatch}}
containing the 
$PM$ and $MM$ intensities for a genes spiked in at different
concentrations. The spike-in concentrations used are
provided as ppart of the phenotypic data (e.g. \code{pData}).
\end{Format}
\begin{Source}\relax
For more information see Irizarry, R.A., et al. NAR (2003)
\url{http://www.biostat.jhsph.edu/~ririzarr/papers/index.html}
\end{Source}

