News tagged with chemical signal

Looking for signs of early life

(PhysOrg.com) -- Deciphering the very early history of life on Earth is difficult. In the darkest recesses of the first billion years there are no 'body' fossils - no physical remains. Instead, scientists ...

dateJul 08, 2009 in Earth Sciences
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The secret to sniffing out a safe supper

When mice smell the scent of food on the breath of their fellow mice, they use that experience to decide what's safe to eat in the future. Key in that learning process is the pairing of a particular odor with a chemical ingredient ...

dateJul 15, 2010 in Plants & Animals
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Cancer on the breath? The nose knows

A breath test for "sniffing out" cancer in a person's breath is a step closer to reality, according to a study recently published in the British Journal of Cancer. The study results show that the device develo ...

dateMay 16, 2011 in Analytical Chemistry
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