*Fisher's exact test.**The analysis was performed by using the “best probe set” (“219197_s_at”). The rest of analyses were performed by using the 51-gene PR signature.
Primers used to amplify cDNAs of rat insulin (Ins), glucagon (Gcg-1, Gcg-2), somatostatin (Sst-1, Sst-2), GABAA receptor subunits and the reference gene β-actin (ACTB).