41.   That some British researchers may have too much time on their hands, for one thing.

42.   The British researchers found, though, that prescription drugs were a big problem for the people taking them.

43.   The British researchers propose that imprinting has caused a gene to be active on the paternal X chromosome but silent on the maternal chromosome.

44.   The British researchers hypothesized that the benefit shown by both parts of the study might really reflect the attention devoted to the patients.

45.   The British researchers provide a window on the tobacco industry in several other ways.

46.   The British researchers devised their own system for testing the sensitivity of genetic material in cells to radiation.

47.   The British researchers cited two other studies that have examined sexual abuse in men.

48.   The British researchers found that the heart attack risk was slighter higher with medium-tar cigarettes than with low-tar brands, but the difference was small.

49.   The British researchers said their study unexpectedly found a high incidence of malaria among children with the genetic disorder, alpha plus-thalassemia.

50.   The British researchers say that one remedy could be to vaccinate older people as well, to boost their immunity to shingles.