http://www.sciencemag.org/content/vol296/issue5576/news-summaries.shtml
Marcia Barinaga
Cells exchanged during pregnancy can live on indefinitely in the mother and child. This so-called microchimerism, viewed at first as an oddity, has been linked to autoimmune diseases and complications of pregnancy. Indeed, microchimerism might help explain one of the puzzles about autoimmune diseases: why many of them strike more women than men.
ALL INFORMATION, DATA, AND
MATERIAL CONTAINED, PRESENTED, OR PROVIDED HERE IS FOR GENERAL INFORMATION
PURPOSES ONLY AND IS NOT TO BE CONSTRUED AS REFLECTING THE KNOWLEDGE OR OPINIONS
OF THE PUBLISHER, AND IS NOT TO BE CONSTRUED OR INTENDED AS PROVIDING MEDICAL OR
LEGAL ADVICE. THE DECISION WHETHER OR NOT TO VACCINATE IS AN IMPORTANT AND
COMPLEX ISSUE AND SHOULD BE MADE BY YOU, AND YOU ALONE, IN CONSULTATION WITH
YOUR HEALTH CARE PROVIDER.