Without ever mixing the blood of mother and child, the villi seize oxygen and vitamins and minerals. The underside of the placenta is lined with 1000’s of tiny projections, referred to as “villi” which lie in swimming pools of the mother’s blood. The enriched blood flows about a foot and a 50 % via the […]
تمامی حقوق مادی و معنوی این وبسایت متعلق به مجموعه آذر رایحه می باشد.