Why you can?t smell infidelity

Some data have shown, not quite conclusively, that the major histocompatibility complex profile of a man plays some role in the type of woman he attracts. Women prefer non-matching MHC profiles, sometimes, but not all the time. These preferences haven't been followed up much in those aspects that go beyond simple mate choice. A newly published study in linkurl:__Psychological Science__;http://www.blackwellpublishing.com/journal.asp?ref=0956-7976&site=1 looked at 48 couples in long-term relatio