1.   And there will be no tests for human growth hormone, insulin growth factor and artificial blood, doping that is believed to be widely used.

2.   As a case in point, the panel cited research on artificial blood substitutes.

3.   Drug tests will not be available in Sydney for human growth hormone, insulin growth factor and products that serve as a kind of artificial blood.

4.   Former Olympian Frank Shorter said athletes can attain human growth hormone, and even laboratory-produced artificial blood, to enhance performance.

5.   No tests exist, for instance, for such drugs as human growth hormone and artificial blood.

6.   Now riders are believed to be using plasma expanders and artificial blood to give them an edge.

7.   Researchers have made significant strides in reducing the amount of blood needed for various operations, and eventually some sort of artificial blood could be found useful in operations.

8.   Researchers are also experimenting with various formulations of artificial blood and blood cells to reduce transfusion problems.

9.   The finding is likely to have significant implications for the treatment of blood pressure and the development of artificial blood.

10.   There are many efforts to develop artificial blood substitutes, although some have encountered difficulties.