Heat-map representation of some up-regulated yeast genes identified by microarray analysis. Cluster 6 of k-mean clustering (k = 11) result showing some of the most strongly up-regulated genes observed in this study. Green color indicates the relative induction level (log2 ratio scale). S. cerevisiae open reading frame (ORF) and gene names are indicated. Red, blue, and black dots indicate genes for ATP-binding-cassette (ABC) superfamily, major facilitator superfamily (MFS), and oxidative stresses, respectively.