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17 April 2014 12:48 pm ,
Vol. 344 ,
Officials last week revealed that the U.S. contribution to ITER could cost $3.9 billion by 2034—roughly four times the...
An experimental hepatitis B drug that looked safe in animal trials tragically killed five of 15 patients in 1993. Now,...
Using the two high-quality genomes that exist for Neandertals and Denisovans, researchers find clues to gene activity...
A new report from the Intergovernmental Panel on Climate Change (IPCC) concludes that humanity has done little to slow...
Astronomers have discovered an Earth-sized planet in the habitable zone of a red dwarf—a star cooler than the sun—500...
Three years ago, Jennifer Francis of Rutgers University proposed that a warming Arctic was altering the behavior of the...
- 17 April 2014 12:48 pm , Vol. 344 , #6181
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ScienceShot: Tears Put Female Mice in the Mood
30 June 2010 1:13 pm
Crying isn't sexy—unless you're a male mouse. Researchers have found that a previously-identified pheromone in male mouse tears, known as ESP1, makes female mice arch their back, lift their hind region, and stay put when the males approach them to mate. (Female mice not in the mood tend to run away.) Scientists have found mouse pheromones in urine before; pheromones in tears may have evolved because tear fluid lingers in the fur, and female mice often groom the faces of other mice, the team will report tomorrow in Nature. Women don't have the receptor for this pheromone, however, so hold back on those tears for now, guys.