11.   The problem did not come as a complete surprise to mission controllers, who said it might have been caused by radiation.

12.   They may have resulted from a spontaneous mutation, Bartke said, or from a mutation caused by radiation.

13.   This is one of several unexpected findings from a five-year research program, funded by the British nuclear industry, to investigate the way radiation causes cancer.

14.   Thus, magnetic radiation could cause or aggravate the growth of breast cancer by suppressing the normal nighttime production of melatonin.

15.   Ultraviolet radiation can cause melanoma in a fish but not, apparently, in any other animal.

16.   Ultraviolet radiation in sunlight causes cancer.

17.   UV radiation causes suntans.

18.   Radiation can cause leukemia, and other cancers, while metal poisoning can lead to kidney damage, experts said.

19.   Children, pregnant women and Chernobyl rescue workers are particularly prone to diseases caused by radiation from the nuclear blast, said Health Minister Andrei Serdyuk.

20.   Children, pregnant women and Chernobyl rescue workers are particularly prone to diseases caused by radiation from the nuclear blast, Health Minister Andrei Serdyuk said Tuesday.