R Expr I: Install and load packages

The first data that we will work with is from an experiment on MCF7 breast cancer cells using Affymetrix HGU95av2 arrays, where the aim is to study which genes respond to estrogen (and also which ones respond early and late, although we will not look at that aspect today).

1. For this lab we need the packages limma, affy, annotate, estrogen, gplots and hgu95av2.db. They contain functions and data that we will use. All except gplots are bioconductor packages. gplots is available on CRAN. Install the packages using the following code:

source("https://bioconductor.org/biocLite.R")
biocLite(c("estrogen", "limma","affy","annotate","hgu95av2.db"))
install.packages("gplots")

2. Load all the packages using the function library().

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