Figure 1
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2229-13-60/MediaObjects/12870_2012_Article_1266_Fig1_HTML.jpg)
GO classification for genes with altered expression in o2 . Genes were assigned to GO molecular function (A) and biological process (B). The plots on the left are genes down regulated in o2 and the plots on the right are genes up regulated in o2.