Ари асарч хкы егьырҭ ахкқәа реиԥш аӷьажәла ахацкәтаӷь ахь анеира иаԥырхагоуп.
What is understood about how these two types function? Copper: As mentioned, IUDs seem to make it difficult for sperm to survive passing through the uterus to reach an egg.