1.   Another possibility is that cytokines from either the mother or the placenta directly damage the fetal brain.

2.   Dyslexia seems to be caused by a breakdown in the way sensory nerves develop in the fetal brain.

3.   Gage argues that cadaver-brain studies allow researchers to avoid the ethical problems of harvesting fetal brain tissue.

4.   One suspect is a virus that disturbs the migration of neurons in the fetal brain.

5.   Studies of developing animal brains have found numerous growth factors and proteins that guide fetal brain cells into making proper connections.

6.   Actually, the researchers used fully developed fetal brain cells.

7.   Animal studies suggest cocaine use alone in pregnancy hampers nerve cell development in the fetal brain, resulting in behavioral problems that get worse with age, Harvey said.

8.   No one knows what causes it, although much research suggests something goes wrong during critical fetal brain development.

9.   Previous work has shown that transplants of fetal rodent brain cells eased stoke symptoms in rats.