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Date:7/29/2008

thermosensation, and this "is quite reminiscent of how we detect light."

"We think it's important for adaptation; if a fly finds itself at 34 degrees (93 degrees F), it should never try to adapt to that temperature, because it will die," says Montell. "But flies living at 22 degrees could adapt to this environment because, while this temperature isn't their optimal choice, it still isn't deleterious." The multistep vision-like strategy for sensing changes in temperature could also be well suited for amplifying very small differences in temperature, such as 18 and 19 degrees C. This strategy could allow animals to respond to one degree changes that might otherwise not be possible through a process involving just one protein.

The team's work raises the possibility that similar multistep processes may allow mammals to sense small changes in internal body temperature.


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Contact: Maryalice Yakutchik
myakutc1@jhmi.edu
443-287-2251
Johns Hopkins Medical Institutions
Source:Eurekalert

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