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Magnetization transfer ratio (MTR) changes of selected regions of interest in white matter (the genu, splenium, FWM, and CSEM) and gray matter (caudate, putamen, FGM, and thalamus) between pre-SIV and post-SIV inoculation. CSEM, centrum semiovale; FWM, frontal white matter; FGM, frontal gray matter. Error bars represent the standard deviation. *p<0.05.
