Comparative analysis of aging experiments. We compare our data (Exp. 1) to microarray data obtained on male flies from  (Exp. 2) and on female flies  (Exp. 3). a) Correlations between the experiments performed on males. The reported fold change (FC) corresponds to 3- and 40-day old males of (Exp1) and 10- and 61 day-old males of (Exp2). The correlation coefficient between the two sets of data is 0.6. b) Venn diagram of the number of probe sets showing significant age-related changes in the three experiments. 112 probesets were identified as age-responsive in the three conditions. c) Repartition of the age downregulated probe sets (ADP) in ovary or testis biased classes according to data from . The total number of ADP is indicated for each experiment. The white bars represent the distribution expected from a distribution of the ADP similar to that observed at the genome level (26% ovary biased and 16% testis biased). The black bars represent the observed numbers with the corresponding percentage of total ADP. Notice the significant enrichment of the ADP in gonad enriched genes for both sexes.