Maurice M. Rapport, a biochemist who helped isolate and name the neurotransmitter serotonin, which plays a role in regulating mood and mental states, and who first described its molecular structure, a development that led to the creation of a wide variety of psychiatric and other drugs, died on Aug. 18 in Durham, N.C. He was 91.

http://www.nytimes.com/2011/09/03/health/03rapport.html

Thanks to Dr. R for bringing this to the attention of the It’s Interesting community.