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Worms sniff out harm
The Scientist 2005, 19(23):28
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Worms learn: If something makes you sick, don't eat it again. Researchers at Rockefeller University have found that worms can learn to avoid substrates scented with bacteria that have made them ill in the past.[1]
The neuro-transmitter serotonin, which mediates nausea and food aversions in humans, appears to control this aversion.
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