RIP Stephen Crohn: The man AIDS couldn't kill

Stephen Crohn lost a boyfriend and many friends to AIDS before realizing that there must be something different about him that kept him from contracting HIV. He eventually became one of the key patients that helped scientists discover the delta32 mutation — a very rare genetic anomaly that makes a person immune (as far as we know) to HIV. Crohn died on August 23rd. His family has said the death was a suicide.