Abstract
WE recently observed1 that although an intra-uterine device (IUD) did not affect ovulation and fertilization, it was contraceptive in the rhesus monkey. The pattern of tubal transport was not markedly disturbed, but eggs could not be recovered from the uterus in IUD monkeys. It was inferred that the principal contraceptive effect of the IUD is probably exerted within the uterus, to cause either premature expulsion and/or premature destruction of the fertilized egg. The presence of an IUD may therefore disturb the pattern of uterine motility in the rhesus monkey.
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References
Kelly, W. A., and Marston, J. H., Nature, 214, 735 (1967).
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Harper, M. J. K., Bennett, J. P., Boursnell, J. C., and Rowson, L. E. A., J. Reprod. Fertil., 1, 249 (1960).
Corner, G. W., Contrib. Embryol. Carnegie Inst., 31, 117 (1945).
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MARSTON, J., KELLY, W. Effect of an Intra-uterine Device on Uterine Motility in the Rhesus Monkey. Nature 217, 774–776 (1968). https://doi.org/10.1038/217774a0
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DOI: https://doi.org/10.1038/217774a0
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