1.   A series of articles and television shows publicized concerns that the chemical Alar, used to keep apples red and firm, could cause cancer.

2.   About half of the chemicals that were tested caused cancer in rats.

3.   Demonstrating that a virus isolated from a human cancer can cause further cancers in other humans is clearly an unacceptable experiment!

4.   I am concerned by a newspaper article which said that some of the drugs used to lower cholesterol can cause cancer.

5.   Once in the body it usually concentrated in the bones, often causing cancer.

6.   Prolonged exposure to the sun can cause skin cancer.

7.   Smoking can cause lung cancer.

8.   Smoking causes lung cancer.

9.   Some of the chemicals cause cancer, some sterility.

10.   The cancer was possibly caused by exposure to asbestos.