Researchers can only use dead cells or pieces of a cell and can only test for one response at a time, such as enzyme activity or the binding of a compound to a receptor.
In order to be useful, Tautigian says, a prostate cancer test would not only have to test for at least two genes, but both genes would have to predict the likelihood that a patient will develop cancer with similar certainty.
"I am disappointed that they wanted me for only the Test series on the South Africa tour, " said Younis.
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Amjad, 29, moved to Canterbury in 2002 and played his only Test for England on the 2009 tour of the West Indies.
And the machines can only test for one event at a time--say, monitoring one enzyme's activity or seeing if a compound binds to a target on a cell.
Nor is enlargement the only test for the incoming presidency.
Mars, though, is far from being the only test case for life in the cosmos.
Katanec has called up only three forwards for the test against the World Cup participants Tunisia, leaving Lecce's Sebastjan Cimerotic out of the squad because of his injury problems.
So it is all the more surprising to learn that not only is she a test pilot for one of the world's biggest aircraft manufacturers, she is the only woman in France holding such a position.
Wales impressed in the first 40 minutes of each Test, only for mistakes and turnovers to undermine their bid to claim a rare Tri-Nations scalp.
It will only be used for licensed autonomous test vehicles.
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Pattinson was selected for the second Test at Headingley despite making only 11 first-class appearances for Nottinghamshire.
It recommends that pediatricians test for strep only when a child has typical strep symptoms, such as a sore throat, and prescribe antibiotics for an active infection.
It was only the second Test series win for India over South Africa after the 1996-97 series at home which India took 2-1, but Ganguly had words of encouragement for the tourists.
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He leafed through the pharmaceutical bible, the Physicians' Desk Reference, and selected 300 drugs to test, culling only those for which fast-onset was a necessity, including medicine for migraines (Imitrex), allergies (Claritin) and depression (Prozac).
Teaching to a test not only narrows the curriculum, it means that teachers prepare students specifically for the test.
The only approved HPV test on the market is for women, for use in cervical-cancer screening.
It was certainly a wretched day for Alastair Cook, in only his second Test as England captain, who could not dislodge the Bangladesh tail until half an hour before lunch.
They're not exactly plentiful, according to the Yale study, which says of the more than 3, 000 children's meals options they examined, only 12 of them passed the nutrition test for a preschooler.
Following test runs for team employees only at Stanford University football games and Warriors preseason games, the app went public when the Warriors kicked off their regular season home schedule on Nov.2.
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Older musicians like Bob Dylan and Paul McCartney have stood the test of time, not only for the quality of their music but for their ability to stay at the forefront of the industry.
Mrs Jephson is campaigning for the introduction of a proficiency test for mobility scooter users, to make them for disabled users only, and to have identification on scooters.
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The inland links-style layout only opened in 2003 but looks a stern test for the cream of European golf.
Facebook, while having only recently gone public, was a test case for those exchanges, like SecondMarket, where pre-public companies can be traded.
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Now 28, Younis was on the recent three-match tour of Australia, which ended in a 3-0 defeat for Pakistan, but only played in the second Test.
Sami, 26, was recalled for the India Test series but took only four wickets in three games, while 26-year-old Nazir has been in and out of the one-day team.
Ravi Bopara was named as England's man of the series after becoming only the fifth batsman to score three successive Test hundreds for his country.
Australia were dismissed for only 98 on day one of the Boxing Day Test after Andrew Strauss opted to bowl first on a green-top wicket offering assistance for the seamers.
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If they think the test only detects cancer they may fear to go for regular checks.
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