Abstract
SUBCUTANEOUS implantation or intra-uterine insertion of a silastic tube containing oestrogen, but not various progestins, has been found to prevent pregnancy in the rat for 45 days until its removal1. We report here similar effects in the rabbit and mechanism of action of this procedure.
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References
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CHANG, M., CASAS, J. & HUNT, D. Prevention of Pregnancy in the Rabbit by Subcutaneous Implantation of Silastic Tube containing Oestrogen. Nature 226, 1262–1263 (1970). https://doi.org/10.1038/2261262a0
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DOI: https://doi.org/10.1038/2261262a0
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