This is because the ends of chromosomes, structures called telomeres, shorten each time the cell divides.
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With all the news about the lost or stolen iPhone 4g, I thought it might be a good time to take a ride in the Cell Phone Time Machine.
Investigators feared that may have given the cell time to dispose of additional explosives, he said.
He worked part time at a cell phone store owned by a mosque member but quit after the owner refused to stop selling ringtones.
Albert's church is in the neighborhood, and he spent time on his cell phone talking with members of his congregation and taking photos to show the damage to those who couldn't make the bus trip.
Very soon after dendritic cells encounter germs via their TLR the process of acquiring pieces of the germ is actually increased before it is switched off by the time the dendritic cell reaches a lymph node, he said.
Similarly, if you look at what happened a couple of years ago, there were all kinds of crossover points that happened around the same time: more cell phones than landlines, more laptops than desktops, more debit cards than credit cards, more farmed fish than wild fish, more girls in college than boys.
''He spends most of his time in a tiny cell memorising the Koran or writing poetry.
According to Dr Rattan, such interventions improve the function of a cell over time, and in doing so, may produce clinical benefits such as protection against neurodegenerative diseases.
Following his arrest in Oaxaca last year, Habacuc Cruz Cruz, a union organiser in the state, says that he was severely beaten and kept for three to eight days at a time in a tiny cell without light or ventilation, which measured just one square metre.
Her research will produce a unique, robust platform that allows for the first time high sensitivity detection of biomarkers without cell manipulation, with high temporal resolution, and for long continuous periods of time.
Then, he needed two hours of computer time to calculate a single cell's activity during a fraction of a millisecond.
For the first time, households with only cell phones were included.
That was 20 years ago, a time when no one had cell phones, Blackberries or Web sites to aid in tracking a missing or abducted person.
They categorised facial dimensions such as the distance between the eyes, then recorded the electrical activity of one brain cell at a time while they showed cartoons to the macaques.
But in 2012, at a time when anyone with a cell phone can spread offensive views around the world with the click of a button, the notion that we can control the flow of information is obsolete.
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And then there's Fiji, where he had to abandon cell towers for a time after a coup.
The hassle with that option: You have to inform your contacts of your new cell phone number each time.
McAfee is so fearful, he says, that he carries up to a dozen disposable cell phones at one time.
Even my wife, who is not a technology-oriented Type-A person, walks around these days with her cell phone all the time.
The discussion continues with the son and daughter chastising their parents about spending too much time on the Internet with their cell phones.
That you need a profusion of such switches to get the right pattern of genes turned on and off in a given cell at a given time is obvious.
Consider the fact that the average US adult sees their physician collectively for less than an hour a year, but spends several times that amount of time PER DAY on computers and cell phones.
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In a previous study, Agarwal and his team found that men who used their cell phones more than four hours a day had significantly lower sperm quality than those who used their cell phones for less time.
Professor Robin Franklin, a regeneration biologist at the Wellcome Trust-MRC Stem Cell Institute and report co-author, said: 'Our findings are extremely exciting because they show for the first time that transplanting these types of cell into a severely damaged spinal cord can bring about significant improvement.
Crooke's first task, an arduous one, was to find out how big the drug should be to best target RNA. RNA strands stretch thousands of nucleotides long, and there may be only one offender out of 100, 000 different strands floating in a cell at any given time.
We have to understand this disease, and we're, really, for the first time beginning to get inside the cell and understand the genetic issues, understand the real causes of cancer, and from that will come our potential for making this disease go away, or not get it, which is even more important.
In September, 1986, after several months of sharing a cell with another hostage, Anderson was, for no apparent reason, returned to solitary confinement, this time in a six-by-six-foot cell, with no windows, and light from only a flickering fluorescent lamp in an outside corridor.
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