one of the simplest infertility treatment methods. This method is based on inserting sperm cells - which are first cleansed of needless cells - into the uterus. Insemination is performed around the time of ovulation, often with medical ovulation stimulation. Egg fertilization takes place in the uterine tube. IUI can be performed either with the husband’s sperm or donor sperm. Pregnancy after IUI with the husband’s sperm is expected in approximately 12% of cases, and 15% with donor sperm.