Olfactory subsystem key to chemical communication between individuals

University of Maryland scientists have uncovered a unique olfactory subsystem in mice that allows them to communicate hormonal states between individuals, specifically information about water and salt balances in the body. Most mammals have a main olfactory system and an accessory olfactory system, which work together to detect odors and other chemical signals. Previous studies have suggested the possibility of a third group of olfactory cells. This study reveals the first evidence of the third system, which involves “GC-D neurons.” According to the study’s author Steven Munger, this system is not likely to be functional in humans, but may provide clues to other olfactory systems involved in human communication. Read more at ScienceDaily, the Baltimore Sun, and the Proceedings of the National Academy of Sciences