Weighing in at 131 tons, the - to date â largest ship propeller made in Waren on the MÃ¼ritz River drives the Emma Maersk, the worldâs largest container ship, with a load capacity of up to 14,770 twenty-foot containers, a length of 397 m, a width exceeding 56 m and a height of 68 m...
Amniocentesis is generally performed during the sixteenth week of pregnancy, with results usually available within three weeks. It is possible to perform an amnio as early as the eleventh week but this is not usually recommended because there appears to be an increased risk of miscarriage when done at this time.
During an amniocentesis a small amount (usually 2 tablespoons) of amniotic fluid that surrounds the fetus is removed. The amniotic fluid contains cells that have been shed by the fetus during normal development. These cells may then be used for chromosome tests and/or specific genetic tests. The fluid itself is tested for the level of alpha feto-protein (AFP) or for biochemical genetic disorders, if appropriate. Amniocentesis is best done after 15 weeks and up to 23 weeks of pregnancy. The amniocentesis procedure involves guiding a thin needle through the mother's abdomen and into the amniotic sac (see below). Ultrasound is used to determine the location of the fetus and the best place to withdraw the fluid.