http://news.discovery.com/human/male-dna-female-brains-120926.htmlIf you're a woman who has been pregnant with a male fetus, you may have male DNA permanently in your body, according to a study that found such genetic material in the brains of women.
The study, published in PLoS ONE, is the first description of male microchimerism in the female human brain. Microchimerism is when someone harbors cells that came from a genetically distinct individual. Or, in the immortal words of the Monkees (singing a Neil Diamond penned song), a person can be A Little Bit Me, A Little Bit You.