A Principal Components Analysis and Functional Annotation of Differentially Expressed Genes in Brain Regions of Gray Rats Selected for Tame or Aggressive Behavior.

In our study, the differential expression here was documented only for 3 of these 14 genes; for the remaining genes of this family, expression differences were not found even at marginal significance.

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At the same time, the magnitude of influence of the PC2 on the overall variation of the expression of all the examined genes is only marginally statistically significant; therefore, we cannot claim with certainty that the level of expression of the investigated genes is specific just to the brain region.

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