All Stories by John Travis
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Clones face uncertain future
Scientists have cloned a cat, but new studies suggest that cloned animals have shortened lifespans.
- Health & Medicine
Stem Cell Success: Mice fuel debate on embryo cloning
In mouse studies, scientists have used a technique called therapeutic cloning to create personalized replacement tissue.
- Health & Medicine
Alzheimer’s disease vaccine abandoned
Safety concerns forced the shelving of tests of an experimental vaccine for Alzheimer's disease.
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A bitter taste in your . . . stomach
The stomach may be able to "taste" bitter substances.
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Channel Surfing
The newly revealed three-dimensional structures of proteins called ion channels reveal the secrets of their crucial function.
- Health & Medicine
Broken Weapon: Mutation disarms HIV-fighting gene
A gene that once produced a small protein able to prevent HIV from infecting cells now lies unusable in the human genome.
- Health & Medicine
Alzheimer’s vaccine trial is suspended
A drug company in Ireland has halted tests of an experimental vaccine for Alzheimer's disease.
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Cool Discovery: Menthol triggers cold-sensing protein
A cell-surface protein that lets ions flow into cells responds to menthol and cool temperatures.
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- Health & Medicine
Taking a toll: Antiviral drugs activate immune system
Promising antiviral drugs activate a key immune-system protein.
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Unfertilized monkey eggs make stem cells
Scientists have for the first time obtained long-lived stem cells from monkey eggs stimulated to undergo parthenogenesis.
- Health & Medicine
DREAMing away pain
Mutant mice lacking a certain regulatory protein overproduce a natural opioid and are less sensitive to pain than are other mice.
