The procedure aims to reduce pregnancies down to approximately one to two fetuses. Copper is essential for the normal growth and development of human fetuses, infants, and children. Males react more sensitively than females and fetuses and children. The resulting stress causes the fetuses to abort. There is an external masculinization of the genitalia in the female fetuses. It is particularly attracted to the fetuses growing inside pregnant women. During pregnancy, all the fetuses in the trial had hindbrain herniation. Least common are identical triplets; three fetuses from one egg. IgG antibodies protects against bacterial and viral infections in fetuses. The system succeeded in helping the premature lamb fetuses develop normally for a month. Mike spots a shelf full of prematurely born fetuses in glass jars. No clinical studies evaluating the risk for fetuses are available. Male fetuses with the disorder rarely survive to term. The main function of this is to prevent the virilization of female fetuses. Four cases were performed before stopping the procedure - two of the four fetuses died.