Depletion of CD8+ cells abolishes the pregnancy protective effect of progesterone substitution with dydrogesterone in mice by altering the Th1/Th2 cytokine profile. - Blois,S.M.; Joachim,R.; Kandil,J.; Margni,R.; Tometten,M.; Klapp,B.F.; Arck,P.C. (J Immunol, 2004)