21.   But a later test, at the FBI lab in Washington, failed to confirm the result.

22.   But even if the earlier results were confirmed in clinical trials with large numbers of infants, he said, he would proceed cautiously.

23.   By Thursday evening, four independent teams, using different methods and different computer programs, had each confirmed the results.

24.   Chen suggested that improved methods and another laboratory be used to confirm the results.

25.   Delgratia releases drill hole tests from two new independent labs confirming assay results from its original unidentified independent lab.

26.   Exploratorium physicist Paul Doherty confirmed key results, aided by David Barker on the field.

27.   He submitted to more sophisticated tests to confirm the results.

28.   If a sample tests positive, a second test is administered as soon as possible to confirm the result.

29.   If the results are confirmed, it would create an unprecedented demand for donor organs, Fradkin said, probably far beyond the supply.

30.   If the results disclosed in London Tuesday are confirmed, they could be an important complement to that research.