Fig. 9: Common and species-specific patterns of transcriptional gene regulation.

A Often, similar biological pathways are significantly enriched and activated (plus symbol) in the organs of both, Spalax and rat after hypoxic stress. B A complex picture emerges when differentially expressed genes within pathways are inspected: expression of different genes in Spalax and rat may lead to activation of the same pathway, as exemplified by Epas1 and Mdm2 (red = upregulation). In contrast, the same gene (here: Mknk1) can be regulated in opposite directions in response to hypoxia in the two species (blue = downregulation).