21.   The enzyme is critical in dozens of processes during early fetal development.

22.   The improved technology is proving useful for medical purposes beyond monitoring fetal development.

23.   The source of schizophrenia, in other words, may lie far back in fetal development, perhaps in faulty neuronal wiring.

24.   Then everyone came to their senses, realizing this regimen could harm fetal development.

25.   Theories about the cause range from genetics to injuries suffered during fetal development.

26.   These chemicals, they say, mimic natural hormones like estrogen and even in minute quantities can disrupt vital processes like fertility and fetal development.

27.   They are causing increasing concern because they have been implicated in breast cancer and declining sperm counts, and may also interfere with fetal development.

28.   This new technology enables doctors to observe fetal development and diagnose abnormalities with improved rates of accuracy.

29.   Until recently, scientists thought not, or that if there is one, it is vestigial and disappears during fetal development.

30.   When a patient is miscarrying and is bleeding heavily, the hospital staff performs an ultrasound to check on how far fetal development has progressed.