| Before birth, a large artery called the ductus arteriosus lets the blood bypass the lungs because the fetus gets its oxygen through the placenta. |
| Some of this protein is excreted into the amniotic fluid surrounding the fetus. |
| I do think that unless the fetus is absolutely nonviable outside the uterus, I'd rather never see it done at all. |
| The amniotic fluid and membrane cushion the fetus against bumps and jolts to the mother's body. |
| If the father cannot be found or refuses to take part it is possible to test the fetus by amniocentesis. |
| The third instance of cord torsion resulted in the delivery of a nonviable, 15.5-week, phenotypically female fetus. |
