Figure 1.

a, Hierarchical clustering showed that the profiles of genetic expression of control rats cluster according to brain area. b, Hierarchical clustering performed on the mean expression values of experimental animals showed that they cluster according to the stage of epileptogenesis, with the exception of the chronic phase. The analysis also showed that changes in gene expression were more similar in CA3 and EC in the early phases than in the chronic phase. The CB group completely separates from the other groups. Red depicts higher expression levels, and blue depicts lower; the deeper shade indicates a larger difference.