11.   It is still too early to know whether it may be possible to develop an effective vaccine against obesity or otherwise counteract the effects of the virus.

12.   Much of the hypothesis that red wine counteracts the effects of dietary cholesterol and saturated fat came from population surveys.

13.   The association said gains in consumer confidence caused by the improving job situation should counteract the effect of mortgage rate increases as high as three-quarters of a percentage point.

14.   The calculations measured the force of small thruster firings that helped counteract the effects of natural forces such as the solar wind -- energy particles streaming from the sun.

15.   The Pittsburgh researchers also suggested modifying how light is used in the spacecraft and using exercise to counteract the effects of weightlessness.

16.   The potassium iodide pills counteract the effects of radioactive iodine, one of the most dangerous elements released during a leak.

17.   The researchers would also develop an enzyme to be taken by friendly troops that would counteract the effect.

18.   The U.S. imposed the duties to counteract the effect of government subsidies to state companies.

19.   They also took tablets, called NAPS, to counteract the effects of chemical and biological warfare as well as being exposed to toxic insecticides.

20.   They also took NAPS, tablets to counteract the effects of chemical and biological warfare.