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Abstract
Insemination of women with sperm treated by the swim-up technique resulted in 81 % male offspring. This was achieved even in women taking ovulation-inducing drugs, in whom the albumin gradient separation technique not only is not effective in male preselection but in which the female sex is favored. Confirmation of these initial data is needed as well as an investigation of the swim-up's efficacy of producing male offspring in women not taking ovulation-inducing drugs.
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