| 摘要 |
The invention relates to a device for insertion into a vaginal passage or for accommodation of a penis during coitus, comprising a selectively permeable separating wall for the enrichment of X-chromosome-bearing spermatozoa or Y-chromosome-bearing spermatozoa, wherein the separating wall shows an increased permeability for X-chromosome-bearing spermatozoa or Y-chromosome-bearing spermatozoa. |
