\HeaderA{hgug4112aENTREZID}{Map between Manufacturer Identifiers and Entrez Gene}{hgug4112aENTREZID}
\aliasA{hgug4112aLOCUSID}{hgug4112aENTREZID}{hgug4112aLOCUSID}
\keyword{datasets}{hgug4112aENTREZID}
\begin{Description}\relax
hgug4112aENTREZID is an R object that provides mappings between
manufacturer identifiers and Entrez Gene identifiers.
\end{Description}
\begin{Details}\relax
Each manufacturer identifier is mapped to a vector of Entrez Gene identifiers. An
\code{NA} is assigned to those manufacturer identifiers that can not be mapped
to an Entrez Gene identifier at this time.

If a given manufacturer identifier can be mapped to different Entrez Gene identifiers
from various sources, we attempt to select the common identifiers. If a
concensus cannot be determined, we select the smallest identifier.

Mappings were based on data provided by: Entrez Gene ( ftp://ftp.ncbi.nlm.nih.gov/gene/DATA ) on 2009-Mar11
\end{Details}
\begin{References}\relax
\url{http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=gene}
\end{References}
\begin{Examples}
\begin{ExampleCode}
        x <- hgug4112aENTREZID
        # Get the probe identifiers that are mapped to an ENTREZ Gene ID
        mapped_probes <- mappedkeys(x)
        # Convert to a list
        xx <- as.list(x[mapped_probes])
        if(length(xx) > 0) {
          # Get the ENTREZID for the first five probes
          xx[1:5]
          # Get the first one
          xx[[1]]
        }
\end{ExampleCode}
\end{Examples}

