About one baby in 1,000 is born with a neural tube defect.

Some problems, such as certain types of neural tube defects and Down syndrome, may not be fatal.

High levels in a mother's blood can indicate a neural tube defect or multiple pregnancy.

A neural tube defect occurs when this process doesn't happen normally.

Anencephaly is the second most common type of neural tube defect.

Preventing neural tube defects, when taken by a mother around the time of conception.

This may help prevent neural tube defects in the baby.

Anencephaly is one of the most common neural tube defects.

Neural tube defects occur in about 1 out of every 1,000 babies born.

They both look for the same thing - neural tube defects and Down syndrome.