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Key Facts In This Video
Animals use major histocompatibility complex (MHC) proteins to find a mate and research is showing that humans might as well. 00:30
A 1995 study showed that women prefer people with a particular MHC scent. 01:03
The scents with a person's own MHCs mixed in trigger a response in one area of the brain and different MHCs trigger another. 01:29