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Plot of Principal Component (PC) 1 versus PC 2, computed across all genes. The principal component analysis plot represents the broad differences in genetic expression of mild traumatic brain injury (mTBI) and blunt tail trauma (TT) RNA extracted from mouse lungs. Treatment groups separate strongly with 34% variance on the PC1 axis, the axis that accounts for the most variation, suggesting mTBI is responsible for the gene expression changes in the lung. n = 2 mTBI; n = 3 TT.
