CAROL & MIKE WERNER / VISUALS UNLIMITED, INC. / SCIENCE PHOTO LIBRARY CAROL & MIKE WERNER / VISUALS UNLIMITED, INC. / SCIENCE PHOTO LIBRARY
Oxytocin molecule. Oxytocin acts primarily as a neurotransmitter in the mammal brain and appears to play a key role in social interaction. Research has indicated that some autistic people may have abnormally low levels of oxytocin. The enzyme may help people with autism make eye contact and interact better with others. Black = carbon; white = hydrogen; red = oxygen; blue = nitrogen; yellow = sulfur.
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