title: Naturally acquired microchimerism: for better or for worse.
authors.forename: J Lee
authors.initials: JL
authors.lastname: Nelson
mesh_terms: D001172:Arthritis, Rheumatoid / Q000453:epidemiology* / Q000235:genetics*; D046528:Chimerism; D005260:Female; D006801:Humans; D008431:Maternal-Fetal Exchange / Q000235:genetics*; D011247:Pregnancy; D012307:Risk Factors