pensim (version 1.3.6)

beer.exprs: Lung adenocarcinoma microarray expression data of Beer et al. (2002)

Description

Lung adenocarcinomas were profiled by Beer et al. (2002) using Affymetrix hu6800 microarrays. The data here were normalized from raw .CEL files by RMAExpress (v0.3). The expression matrix contains expression data for 86 patients with 7,129 probe sets.

Usage

data(beer.exprs)

Format

A data frame with 7129 probe sets (rows) for 86 patients (columns)

References

Irizarry, R.A., et al. (2003) Summaries of Affymetrix GeneChip probe level data, Nucl. Acids Res., 31, e15+-e15+.

Examples

data(beer.exprs)
mysd <- apply(beer.exprs, 1, sd)

beer.subset <- as.matrix(beer.exprs[rank(-mysd) <= 100, ])  
heatmap(beer.subset)