Word: geneses
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Basically, the identity switch comes about by a reprogramming process that changes the pattern of which genes are active and which are shut off.
The researchers destroyed beta cells in mice with a poison, giving the mice diabetes. Then they injected the pancreas with viruses that slipped into the enzyme-making cells. These viruses delivered three genes that control the activity of other genes.
A parody of war movies and a pinprick in the helium balloon of Hollywood egos, Tropic Thunder caps a hectic summer of action films and star-driven comedies and is designed as a blend and a semiloving critique of both genres. The picture is savvy to the max, maybe to...
Another more complicated possibility [for women's longevity] is that women have two X chromosomes, while men have one. (Men have an X and a Y.) When cells go through aging and damage, they have a choice in terms of genes - either on one X chromosome or the other. Consider...
It's very unclear [how big an effect that could have]. I've seen men who have done horrendous damage to themselves over time with smoking and drinking and who still get to 100 and older - though that's very, very rare. They might have the right combination of some...