Rat {Equalden.HD}

Rat data

Description

A microarray data set with 8038 logged gene expression levels measured on 5 rats. All rats were subjected to the same treatment. The rows correspond to the genes and the columns refer to the rats.

Usage

data(Rat)

Format

A matrix with 8038 rows corresponding to the measured genes and 5 columns corresponding to the rats.

References

Davidson, L.A., Nguyen, D.V., Hokanson, R.M., Callaway, E.S., Isett, R.B., Turner, N.D., Dougherty, E.R., Wang, N., Lupton, J.R., Carroll, R.J., and Chapkin, R.S. (2004). Chemopreventive n-3 polyunsaturated fatty acids reprogram genetic signatures during colon cancer initiation and progression in the rat. Cancer Research, 64, 6797-6804.

Examples

data(Rat)
X <- Rat
k <- dim(X)[1]
### Estimated densities of logged gene expression levels.
s <- apply(X, 1, density)
### Plot of estimated densities of 6 randomly selected genes.
set.seed(375)
rs <- sample(1:k, 6)
plot(s[[rs[1]]], main = "Kernel estimates for 6 randomly selected genes",
 xlab = "x", ylab = "density", xlim = c(-4, 2), ylim = c(0, 6))
for (i in 2:6){
  lines(s[[rs[i]]], col = i)
}