| http://www.w3.org/ns/prov#value | - These chemicals are thought to be pheromones ??? molecules known to trigger responses such as defense and sex in many animals.Whether humans respond to pheromones has been debated, although in 2000 American researchers reported finding a gene that they believe directs a human pheromone receptor in the nose.The same team reported last year on a comparison of the response of male homosexuals to hete
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