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Journal of Cell Science|April 1, 1980
Secretion of newly synthesized proteins by isolated liver cellsR J van Kooij, C PoortHuman Reproduction (Oxford, England)|August 1, 1988
The presence of zonae pellucidae influences fusion rates between spermatozoa and zona free hamster oocytesR J van Kooij, E R te VeldeFertility and Sterility|August 1, 1992
Determination of sex ratio of spermatozoa with a deoxyribonucleic acid-probe and quinacrine staining: a comparisonR J van Kooij, B A van OostJournal of Reproduction and Fertility|May 1, 1983
Secretory piece and plasma proteins in human cervical mucus during the cycleR J van Kooij, G A Kathmann, M F KramerAndrologia|March 1, 1986
Oocyte penetration and acrosome reactions of human spermatozoa. I: Influence of incubation time and medium compositionR J van Kooij, M Balerna, A Roatti, et al.Andrologia|September 1, 1986
Oocyte penetration and acrosome reactions of human sperms. II: Correlation with other seminal parametersR J van Kooij, M Balerna, A Roatti, et al.Journal of Reproduction and Fertility|May 1, 1983
Cyclic variations in glycoprotein synthesis in the columnar cells of the human cervixH J Roelofs, R J van Kooij, M F KramerInternational Journal of Andrology|December 1, 1995
Application of in-vitro fertilization in (almost) fertile couples should, and can, be avoidedE R te Velde, J D Habbema, R J Van KooijInternational Journal of Andrology|December 1, 1995
Is there still a place for intra-uterine insemination as a treatment for male subfertility? A reviewB J Cohlen, E R te Velde, R J van KooijPageof 14