Venn analysis of distribution of differentially expressed (DE) genes in eutopic-to-ectopic analysis. Distribution of DE genes in (A) eutopic and ectopic samples of stage 3 and stage 4, and proliferative and secretory phases, (B) stage 3-to-stage 4 for eutopic and ectopic samples, and (C) proliferative-to-secretory phases for eutopic and ectopic samples. Common genes among comparative groups are detailed in respective tables along with the vector of regulation and fold changes. The number of genes with relative up-regulation and down-regulation are shown by respective arrows. For details of DE genes, see Additional file 3: Table S3. Note that the areas in the Venn distribution analysis are not drawn to scale.