1Cobb S P,Wasten E D.Immunohistochemical study of immune cell in the bovine endometrium at different stages of the oestrouscycle[J].Res Vet Sci,1995,59:238～241.
2Corbeil L B,Anderson M L,Corbeil R R,et al.Female reproductive tract immunity in bovine trichomoniasis[J].Am J Repro Immunol,1998,39:189 ～ 198.
3Del V R P,Matsas D J,Inzana T J,et al.Effect of intrauterine bacterial infusions and subsequent endometritis on prostaglandin F2a metabolite concentrations in postpartum beef cows[J].J Anim Sci,1992,70:3158.
4Galeatti M,Belluzzi S,Volpatti D,et al.Evaluation of mast cells in calf and heifer uteri[J].Theriogenology,1997,48:1301 ～1311.
5Hoedemaker M L,Lund A,Wangner W C.Influence of arachidonic acid metabolites and steroids on function of bovine polymorphonuclear neutrophils[J].Am J Vet Res,1992,53:1534.
6McEvoy J D,Pollock J M.A preliminary study of peripheral lymphocyte function in cows with chronic endometritis[J].Vet Rec,1994,134:237.
7Prabhala R H,Wira C R.Cytokine regulation of the mucosal immune system[J].Endocrinology,1991,129:2915～2923.
8Ramadan A A,Sayre B L,Lewis G S.Regulation of uterine immune function during the estrous cycle and in response to infectious bacteria in sheep[J].J Anim Sci,1997,75:1621.
9Sato S.Immunosuppression in periparturient cows and the effects of immunostimulation[J].Tohoku J Veterinary Clnics,1998,21:61～70.
10Schindler D,Lewis G S,Rosenberg M,et al.Vulvar electrical impedance in periparturient cows and its relation to plasma progesterone,oestradiol-17b and PGFM[J].Anim Reprod Sci,1990,23:283.
