ShrinkCovMat (version 1.0.0)

colon: Colon Cancer Dataset

Description

The dataset describes a colon cancer study (Alon et al., 1999) in which gene expression levels were measured on 40 normal tissues and on 22 tumor colon tissues. A logarithmic (base 10) transformation was applied to the gene expression levels.

Usage

data(colon)

format

A data frame in which the rows correspond to 2000 genes and the columns to 62 tissues. The first 40 columns belong to the normal tissue group while the last 22 columns to the tumor colon tissue group.

source

http://genomics-pubs.princeton.edu/oncology/affydata{http://genomics-pubs.princeton.edu/oncology/affydata}

References

Alon, U., Barkai, N., Notterman, D.A., Gish, K., Ybarra, S., Mack, D., Levine, A.J. (1999). Broad patterns of gene expression revealed by clustering analysis of tumor and normal colon tissues probed by oligonucleotide arrays. Proceedings of the National Academy of Sciences of the United States of America 96, 6745--6750.

Examples

data(colon)
colnames(colon)