21.   As to the brain cancer finding, she said, researchers do not have a plausible explanation for it, and so further research is necessary.

22.   At any rate, researchers may have another opportunity to make up any lapses.

23.   At any rate, the new researcher has a base camp, a Land Rover and a plane to use in studying wildlife from the Mara River to Amboseli.

24.   Before reaching that stage, researchers had to solve numerous problems in the laboratory.

25.   Before the Internet, researchers would have to dig laboriously through reams of SEC documents in government or business libraries.

26.   Bolger said researchers had no hard data on how much lead might actually be in maple syrup.

27.   AIDS researchers may have to rethink their theories of how HIV destroys the immune system, if controversial work by Dutch scientists is borne out.

28.   All the researchers had both machines chewing up real estate on their desks.

29.   British researchers have also had clearer guidelines as to what research is permissible.

30.   But because AIDS is a killer, researchers have a moral responsibility to do everything possible to prevent people from risking infection.