BECKERS J.F. & ECTORS F. Dosage de l'hormone placentaire somatotrope et mammotrope bovine par liaison radio-compétitive aux récepteurs membranaires. Ann. Méd. Vét., 1981, 125: 311-319.
BECKERS J.F., DE COSTER R., WOUTERS-BALLMAN P., FROMONT-LIÉNARD Ch., VAN DER ZWALMEN P. & ECTORS F. Dosage radioimmunologique de l'hormone placentaire somatrope et mammotrope bovine. Ann. Méd. Vét., 1982, 126: 9-21.
BECKERS J.F., FROMONT-LIÉNARD Ch., VAN DER ZWALMEN P., WOUTERS-BALLMAN P. & ECTORS F. Isolement d'une hormone placentaire bovine présentant une activité analogue à la prolactine et à l'hormone de croissance. Ann. Méd. Vét., 1980, 124: 585-601.
BECKERS J.F., WOUTERS-BALLMAN P. & ECTORS F. Isolation and radioimmunoassay of a bovine pregnancy specific protein. Theriogenology, janvier 1988, 29(1): 219 (Abs).
BECKERS J.F., DEWULF M., VERSTEGEN J., WOUTERS-BALLMAN P. & ECTORS F. Isolation of a bovine chorionic gonadotrophin (bCG). Theriogenology, janvier 1988, 29(1): 218 (Abs).
BECKERS J.F., ROBERTS R.M., ZOLI A.P., ECTORS F. & DERIAUX J. Molécules de la famille des protéinases aspartiques dans le placenta des ruminants: hormones ou protéines? Bull. Mém. Acad. Roy. Méd. Belgique, 1994, 149: 355-367.
BECKERS J.F., ZARROUK A., BATALHA E.S., GARBAYO J.M., SZENCI O. & MESTER L. Endocrinology of pregnancy: chorionic somatomammotropins and pregnancy-associated glycoproteins: review. Acta Veterinaria Hungarica, 1998, 46(2): 175-189.
BOLANDER F.F.Jr & FELLOWS R.E. Purification and characterization of bovine placental lactogen. J. Biol. Chem., 1976, 251: 2703-2708.
BUTTLE H.L. & FELLOWS R.E. Purification and characterization of bovine placental lactogen. J. Biol. Chem., 1976, 251: 2703-2708.
BUTTLE H.L. & FORSYTH I.A. Placental lactogen in the cow. J. Endocr., 1976, 68: 141-146.
CHAN J.S.D., ROBERTSON H.A. & FRIESEN H.G. Maternal and fetal concentrations of ovine placental lactogen measured by radioimmunoassay. Endocrinology, 1978a, 102: 1606-1613.
DERIVAUX J., ECTORS F. & BECKERS J.F. Le placenta des ruminants: structure et fonction endocrine, mars 1988, monographie, édition IRSIA.
ECTORS F.J., DRION P.V., DELVAL A., SMITH L.C., SULON J., ZAAIJER D., SZENCI O., REMY B., BECKERS J.F. & ECTORS F. Interests of pregnancy follow-up in cows after embryo transfer special focusing on IVP&NT origin. AETE, 12e Colloque Scientifique, 13-14 septembre 1996, Lyon France, 95-102.
FOLCH J., BENITEZ W., ALABART J.L. & BECKERS J.F. Determinacion de la concentration plasmatica de PAG (pregnancy associated glycoprotein) en cabras blanca celtiberica y su utilizacion como diagnostico de gestacion. Edition Asociacion Interprofesional para el Desarollo Agrario, Ve Journées pour la production animale, 1993, 364-366.
GARBAYO J.M., REMY B., ALABART J.L., FOLCH J., WATTIEZ R., FALMAGNE P. & BECKERS J.F. Isolation and partial characterization of a pregnancy-associated glycoprotein (PAG) family from the goat placenta. Biol. Reprod., 1998, 58: 109-115.
GONZÁLEZ F., SULON J., BATISTA M., CABRERA F., CALERO P., GRACIA A. & BECKERS J.F. Early pregnancy diagnosis in goats by determination of pregnancy-associated glycoprotein concentrations in plasma samples. Theriogenology, in press.
GREEN J.A., XIE S. & ROBERTS R.M. Pepsin-related molecules secreted by trophoblast. Reviews of Reproduction, 1998, 3: 62-69.
HEAPE W. Preliminary note on the transplantation and growth of mammalian ova in a uterine foster-mother. Proc. R. Soc., 1891, 48: 457-458.
OSBORN D.A., BECKERS J.F., SULON J., GASSETT J.W., WHITE L., MURPHY B.P., MILLER K.V. & MARCHINTON R.L. Use of two pregnancy-associated glycoprolein RIA's for pregnancy diagnosis in white-tailed deer. Journal of Wildlife Management, 1996, 60(2): 388-393.
PATEL O.V., SULON J., BECKERS J.T., TAKAHASHI T., HIRAKO M., SASAKI N. & DOMEKI I. Plasma bovine pregnancy-associated glycoprotein concentrations throughout gestation in relationship to fetal number in the cow. European Journal of Endocrinology, 1997, 137: 423-428.
RANILLA M.J., SULON J., CARRO M.D., MANTECÓN A.R. & BECKERS J.F. Plasmatic profiles of pregnancy associated glycoprotein and progesterone levels during gestation in churra and merino sheep. Theriogenology, 1994, 42: 537-545.
SKINNER J.G., GRAY D., GEBBIE F;E., BECKERS J.F. & SULON J. Field evaluation of pregnancy diagnosis using bovine pregnancy-associated glycoprotein (bPAG). Cattle Practice, BCVA, 1996, vol. 4, part 3: 281-284.
SOUSA N.M., GARBAYO J.M., FIGUEIREDO J.R., SULON J. & BECKERS J.F. Pregnancy-associated glycoprotein and progesterone concentrations during gestation and postpartum in moxoto and caninde natives goats of northeast of Brazil. Small Ruminants Research, 1998, 1739: 1-11.
SZAFRANSKA B., XIE S., GREEN J. & ROBERTS R.M. Porcine preganacy-associated glycoproteins: new members of the aspartic proteinase gene family expressed in trophectoderm. Biology of Reproduction, 1995, 53: 21-28.
VERSTEGEN J., FELLMANN, D. & BECKERS J.F. Immuno-detection of bovine chorionic somatomammotrophin (bCS). Acta Endocrinologica, 1985, 109: 403-410.
WILLEY K.P., LEINDENBERGER F. Functionally distinct agonist and receptor-binding regions in human chorionic gonadotropin. Development of a tertiary structure model. J. Biol. Chem., 1989, 264(33): 19716-29.
WOODING F.B.P. & BECKERS J.F. Trinucleate cells and the ultrastructural localisation of bovine placental lactogen. Cell Tissue Res., 1987, 247: 667-673.
XIE S., LOW B.G., NAGEL R.J., KRAMER K.K., ANTHONY R.V., ZOLI A.P., BECKERS J.F.& ROBERTS R.M. Identification of the major pregnancy-specific antigens of cattle and sheep as inactive members of the aspartic proteinase family. Proc. Natl. Acad. Sci. USA, 1991, 88: 10247-10251.
XIE S., LOW B.G., NAGEL R.J., BECKERS J.F. & ROBERTS R.M. A novel glycoprotein of the aspartic proteinase gene family expressed in bovine placental trophectoderm. Biology of Reproduction, 1994, 51: 1145-1153.
ZARROUKA., REMY B., SULON, DRION P.V., BESBULEUX H. & BECKERS J.F. Endocrinologie de la Gestation chez les Ruminants: les protéines placentaires. Annales de Médecine Vétérinaire. 1998, 142: 171-184.
ZARROUK A., ENGELAND I., SULON J. & BECKERS J.F. Determination of pregnancy-associated glycoprotein concentrations in goats (Capra hircus) with unsuccessful pregnancies: a retrospective study. Theriogenology, 1999, vol. 51 (7): 1321-1331.
ZOLI A.P., GUILBAULT L.A., DELAHAUT P., BENITEZ ORTIZ W. & BECKERS J.F. Radioimmunoassay of a Bovine Pregnancy-Associated Glycoprotein in serum: Its Application for Pregnancy Diagnosis. Biology of Reproduction, 1992, 46: 83-92.
