My local store said they had two copies but both were out at the moment.
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Before Gutenberg, books were handwritten by scribes, and no two copies were exactly the same.
At this time there are two copies, on in the browser, one on the server.
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Two copies of the "val" gene makes powerful COMT that mops up the chemicals rapidly.
Both drugs are being tested in patients who have two copies of a genetic mutation called F508del.
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The Library of Congress said last month it was aware of only two copies of the photo.
The family so revered the Times that at one point they had two copies delivered to their home.
We don't want you to get two copies of your e-mail if both applications stay up and running.
Those with two copies of the commonest form of the gene (one copy inherited from each parent) smoked most.
Because everyone has two copies of each gene -- one from each parent -- there are six possible combinations.
WSJ: A Gene Gives a Hint Of How Long a Person Might Hope to Live
Most genes in a cell are present as two copies, one from the mother and one from the father.
The book comes from the collection of the Old South Church in Boston which has two copies of the edition.
But everyone gets two copies of the gene--one from each parent--and even a single M scuttles any hope for a magical career.
One in ten people has two copies of this gene and is at double the risk of diabetes compared with the average person.
What fascinates scientists are people with one or -- more rarely -- two copies of the E-4 and E-2 versions of the gene.
WSJ: A Gene Gives a Hint Of How Long a Person Might Hope to Live
But two copies of the "met" form produce a weaker version of COMT that is not so good at clearing away the chemicals.
The study found that volunteers with two copies of the "val" gene were better able to break down dopamine and suffered less pain.
Roughly 1 in 45 healthy Americans are carriers of the recessive trait, meaning they are missing one of the normal two copies of the gene.
As a result, she suggests that large programs such as operating systems should be made in such a way that no two copies are exactly alike.
To be affected by the disease, however, puppies have to inherit two copies of the bad gene, one from their father and one from their mother.
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Everybody has two copies of each gene, and there are two possible versions which people can carry, so they can either be classed as ll, ls or ss.
But if a patient has two copies of apo E-4, the odds that the dementia is due to Alzheimer's jumps to 94% from 66%, the Duke scientists say.
WSJ: A Gene Gives a Hint Of How Long a Person Might Hope to Live
These carrier screenings involve identifying individuals who carry one copy of a gene for a disease that requires two copies for the disease to be expressed in a child.
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Zannis, first discovered 17 years ago that there were three versions of apo E, they found that most people afflicted with a rare type of artery-clogging atherosclerosis had two copies of apo E-2.
WSJ: A Gene Gives a Hint Of How Long a Person Might Hope to Live
Why buy two copies of the same product?
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There is no scope for plots in which two copies of Kirk roam the universe until they meet in a dreadful epiphany: in quantum teleportation, the original copy of Kirk is destroyed by the very process of being entangled with the transporter.
This is possible because virtualization makes cloning software very easy, and Networked Attached Storage devices have extremely sophisticated ways of making virtual copies of large amounts of data and then tracking the changes between the two copies, which saves massive amounts of storage.
Two copies are in her home (the cabinet where the bottles of drugs are kept and on the bottom of her weekly dispenser), plus she and I each have a copy in our wallets, and I update all the doctors every time something changes.
What really shook up the world's neurologists, though, was the Duke team's finding that people born with two copies of the E-4 version of apo E developed Alzheimer's symptoms an average of 20 years earlier in life than those born with an E-2 version.
WSJ: A Gene Gives a Hint Of How Long a Person Might Hope to Live
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