At the bottom of the article, there is a link to the original paper: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0045592 http://www.plos

At the bottom of the article, there is a link to the original paper: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0045592 http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjourna... ...which can be downloaded (i.e. not behind a pay-wall). From the abstract: "In this study, we quantified male DNA in the human female brain as a marker for microchimerism of fetal origin (i.e. acquisition of male DNA by a woman while bearing a male fetus). Targeting the Y-chromosome-specific DYS14 gene, we performed real-time quantitative PCR in autopsied brain from women without clinical or pathologic evidence of neurologic disease (n = 26), or women who had Alzheimer’s disease (n = 33). We report that 63% of the females (37 of 59) tested harbored male microchimerism in the brain."