colon {lemma}R Documentation

The colon cancer data set (Alon et al., 1999)

Description

The data analyzed by Alon et al. (1999) consists of 2000 ESTs in 40 tumor and 22 normal colon tissue samples. Of the 40 patients involved in the study, 22 supplied both tumor and normal tissue samples. The normalized data was downloaded from
http://microarray.princeton.edu/oncology/affydata/index.html and was further transformed by taking the log2 of the expression data.

Usage

colon

Format

A data frame containing 2,000 rows and 64 columns. The first column contains the gene IDs, the second column contains the gene names. Columns 3-24 contain the reponses for the 22 control samples, and columns 25-64 contain the reponses for the 40 treatment samples.

References

Alon, Barkai, Notterman, Gish, Ybarra, Mack and Levine (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, 96 6745-6750.


[Package lemma version 1.2-1 Index]