Profoundimmunologicchangesoccurduringpregnancy, involving a polarizationoft helper cellstowards a dominance of Th2andregulatorytcell effector responsesinbothmotherandfetus.
She has chosen 51 genes to study, including those involved in the body's responses to stress and infection, in hormonal changes related to pregnancy, and in ways in which the body handles a wide variety of environmental toxins.