[Donor cervical mucous in the treatment of the persistent cervical factor in infertility (author's transl)].

A case of persistent infertility due to a cervical factor is reported which did not respond to several treatment regimes to make the cervical mucous penetrable for the sperms of the husband. Intra-uterine insemination was equally unsuccessful, however the in-vitro incubation of the semen of the husband in donor cervical mucous and subsequent intra-uterine insemination of this incubated mucous resulted in a pregnancy.