study of stem cells

[ music ] >> we all regrow parts of ourbody, your hair, your nails. you probably do not know we alsocan regrow part of our brain. the nerve cells areregenerated every day. actually, we have over athousand new neurons every day in our brain for our lifetime. my name is hongjun song. i'm the director ofthe stem cell program. i develop new technologies andapply them to study stem cells

in humans and the animals. i discovered where stemcells are, how they grow, and how they contributeto brain functions. i also study how stem cellare affected by experience, good ones or bad ones,and how they are affected by medical treatments suchas antidepressant treatments and chemotherapy. i hope to harness our ownregeneration potential to improve learning andmemory and help treat injuries

and brain disorders suchas epilepsy and depression.