LPSeset {plgem} | R Documentation

## ExpressionSet for Testing PLGEM

### Description

This `ExpressionSet` object contains a subset of the microarray data used in References for PLGEM set-up and validation. Briefly, it contains normalized gene expression values from a total of 6 hybridizations on MG-U74Av2 Affymetrix GeneChip microarrays. Two experimental conditions are represented in this dataset: the baseline condition (‘C’) contains data of immature murine dendritic cells (4 replicates); the other condition (‘LPS’) contains data of the same cells stimulated for 4 hours with LPS (2 replicates).

### Usage

      data(LPSeset)

### Format

An object of class `ExpressionSet`.

### Author(s)

Mattia Pelizzola mattia.pelizzola@gmail.com

Norman Pavelka normanpavelka@gmail.com

### References

Pavelka N, Pelizzola M, Vizzardelli C, Capozzoli M, Splendiani A, Granucci F, Ricciardi-Castagnoli P. A power law global error model for the identification of differentially expressed genes in microarray data. BMC Bioinformatics. 2004 Dec 17;5:203.; http://www.biomedcentral.com/1471-2105/5/203

### Examples

      data(LPSeset)
      library(Biobase)
      head(exprs(LPSeset))

[Package plgem version 1.64.0 Index]