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- Complex logic circuit made from bacterial genes
- Condom use drops when young women use hormonal contraceptives
- Smoking may lead to cataracts in aging population
- Scientists identify mammal model of bladder regeneration
| Complex logic circuit made from bacterial genes Posted: 13 Oct 2012 02:43 PM PDT An engineer has assembled the most complex logic circuit yet assembled in a single bacterium. The logic circuit, in which genes and the molecules that turn the genes on or off function as logic gates, the simple devices that form the basis for electronic circuits, is one step in an effort to make programmable bacteria that make biofuels, degrade pollutants, or attack cancer or infections.  |
| Condom use drops when young women use hormonal contraceptives Posted: 13 Oct 2012 02:41 PM PDT Young women who start using hormonal contraceptives for birth control often stop using condoms, but a new study finds that if they later discontinue using hormonal contraceptives, they tend not to resume using condoms, increasing their risk of both unintended pregnancy and sexually transmitted infections.  |
| Smoking may lead to cataracts in aging population Posted: 13 Oct 2012 02:41 PM PDT Cigarette smoking is a well-known risk factor for a wide-range of diseases. Now, scientists have evidence that smoking may also increase the risk of age-related cataract, the leading cause of blindness and vision loss in the world.  |
| Scientists identify mammal model of bladder regeneration Posted: 13 Oct 2012 02:41 PM PDT While it is well known that starfish, zebrafish and salamanders can re-grow damaged limbs, scientists understand very little about the regenerative capabilities of mammals. Now, researchers report on the regenerative process that enables rats to re-grow their bladders within eight weeks.  |
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