naïve and trained rats 24 hours after exposure to the contextual fear conditioning paradigm. Biological replicates: 4 naïve and 4 trained animals, independently conditioned and tissues were independently isolated. One replicate per array. Overall design: Two-condition experiment, Naïve vs. Trained tissue. Biological replicates: 4 naïve, 4 trained, independently trained and isoalted. One replicate per array.