Rh negative Rh Factor Rh negative attack the red blood cells of any RH positive children American Pregnancy Association Rh negative Rh negative Rh negative Rh negative Rh negative RH factor Rh negative Rh negative Rh negative Rh negative Rh negative Rh negative Rh negative AmericanPregnancy.org Rh negative my blood type is Rh negative Rh negative