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    Jan 28, 2008

    MHC

    The major histocompatibility complex, MHC, might be the scent of love.

    The MHC is a large gene family that controls the immune system and reproduction. A recent study reveals that women prefer men whose MHC is most different from their own, which they can tell through smell. Paula Abdul was right: Opposites do attract!

    Editorial note: Whoa! You've found a super-old post here on BuzzFeed, from an earlier era of the site. It doesn't really represent where we are anymore, and may in fact be totally broken, but we're leaving it up as a part of our early history.

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