Barman, H. K. and Y. S. Rajput. 1994. Inhibition of mouse $\times$
mouse hybridoma growth by milk and colostrum. Lait. 74:473-478.
Bohn, H., R. Johannsen and W. Kraus.1980. New placental protein (PP15) with immunosuppressive properties. Arch. Gynaecol. 230:167-172.
Bohn, H., W. Kraus and W. Winkler. 1982. New soluble placental tissue proteins: their isolation, characterisation, localisation and quantification. Placenta 4:67-81.
Boyum, A. 1968. Isolation of mononuclear cells and granulocytes from human blood. Scand. J. Clin. Lab. Invest. 21(Suppl. 97) 77.
Bradford, M. M. 1976. A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding. Anal. Biochem. 72:248-254.
Deepthi, K. 2000. Studies on effect of 65 kDa buffalo placental protein on B and T lymphocyte response. MSc. Thesis, National Dairy Research Institute Deemed University, Karnal, India.
Germain, G., T. Mignot, P. Bischof, M. Mouren and L. Cedard. 1989. Plasma levels of SP1-like immunoreactive material (SP1) and progesterone throughout pregnancy and following RU486-induced early abortion in the cynomolgus monkey (Macaca fascicularis). Human Reprod. 4:975-980.
Hansen, P. J. 1997. Interactions between the immune system and the bovine conceptus. Theriogenology 47:121-130.
Hansen, P. J., E. C. Segerson and F. W. Bazer. 1987. Characterisation of immunosuppressive substances in the basic protein fractions of the uterine secretions from pregnant ewes. Biol. Reprod. 36:393-403.
Hansen, P. J., D. C. Stephenson, B. G. Low and G. R. Newton. 1989. Modification of immune function during pregnancy by products of the sheep uterus and conceptus. J. Reprod. Fertil. 37:55-61.
Harlow, E and D. Lane. 1988. Antibodies: A Laboratory Manual, Cold Spring Harbor Laboratory, New York.
Hau, J. 1986. Animal proteins immunologically cross-reacting with human pregnancy associated $\alpha$2-glycoprotein (PZP, $\alpha$ 2 PAG, PA $\alpha$ 2G). In: Pregnancy proteins in animals.(Ed. J.Hau). Walter de Gruyter-Berlin, New York, pp. 445-451.
Hugli, T. E. 1989. Techniques in protein chemistry. Academic press, Inc. Sandiego, California.
Laemmili, U. K. 1970. Cleavage of structural proteins during the assembly of the head of bacteriophage T4. Nature 227:680-685.
Mehta, S. and Y. S. Rajput. 1999. Immunosuppressive activity in buffalo placenta. Indian J. Exptl. Biol. 37:959-964.
Mehta, S. and Y. S. Rajput. 2001. Purification and characterisation of an immunosuppressive protein from buffalo placenta. Buffalo J. (In press).
Murray, M. K., E. C. Segerson, P. J. Hansen, F. W. Bazer and R. M. Roberts. 1987. Suppression of lymphocyte activation by a high molecular weight glycoprotein released from preimplantation ovine and porcine conceptus. Am. J. Reprod. Immunol. Microbiol. 14:38-44.
Newton, G. R., P. J. Hansen and B. G. Low. 1988. Characterisation of a high molecular weight glycoprotein secreted by the preimplantation bovine conceptus. Biol. Reprod. 39:553-560.
Newton, G. R., J. L. Vallet, P. J. Hansen and F. W. Bazer. 1989. Inhibition of lymphocyte proliferation of ovine trophoblast protein-1 and a high molecular weight glycoprotein produced by the preimplantation sheep conceptus. Am. J. Reprod. Immunol. Microbiol. 19:99-107.
Pandian, A. M. C., R. D. Lambert and R. Roy. 1988. Immunosuppressive effects of rabbit blastocoelic fluid and embryo culture medium. J. Reprod. Immunol. 13:221-234.
Pockley, A. G. and A. E. Bolton. 1989. Placental protein 14 (PP14) inhibits the synthesisof interleukin-2 receptors from phytohaemagglutinin-stimulated lymphocytes. Clinical Expertl. Immunol. 77:252-256.
Pockley, A. G. and A. E. Bolton. 1990. The effect of human placental protein 14 (PP14) on the production of interleukin-1 from mitogenically stimulated mononuclear cell culture. Immunology 69:277-281.
Roth, T. L., K. L. White, D. L. Thompson Jr., B. E. Barry, J. S. Capehart, D. R. Colborn and M. H. Rabb. 1990. Suppression of lymphocyte proliferation by a >30,000 molecular weight factor in horse conceptus conditioned medium. Biol. Reprod. 43:298-304.
Segerson, E. C. and F. W. Bazer. 1989. High molecular weight basic and acidic immunosuppressive protein components in uterine secretions of pregnant cows. Biol. Reprod. 41:1014.
Segerson, E. C., R. J. Moffatt, F. W. Bazer and R. M. Roberts. 1984. Suppression of phytohemagglutinin-stimulated lymphocyte blastogenesis by ovine uterine milk protein. Biol. Reprod. 30:1175-1186.
Smith, A. D. and J. E. Wilson. 1986. A modified ELISA that selectively detects monoclonal antibodies recognizing native antigen. J. Immunol. Methods 94:31-35.
Tatarinov, Y. S. and V. N. Masyukevich. 1970. Immunochemical identification of new $\beta$-1 globulin in the blood serum of pregnant women. ByII. Eksp. Biol. Med. USSR. 69:66-68.
Tease, I. A., A. T. Fazleabas and W. Y. Chan. 1989. Characterisation of baboon pregnancy specific $\beta$
-1-glycoprotein. Biol. Reprod. 41:1113-1121.
Watson, E. D. 1990. Suppression of lymphocyte activity by culture supernatent from horse embryos and endometrium. Biol. Reprod. 42:294-300.
Veselsy, L., J. Dostal, V. Holan, J. Soucek and B. Zelezna. 1996. Effect of boar seminal immunosuppressive fraction on B lymphocytes and of primary antibody response. Biol Reprod. 55:194-199.