21.   Backers of the space station say it will give medical researchers a unique opportunity to test drugs in a low-gravity environment.

22.   Benzinger, a medical researcher who also invented the ear thermometer, died Tuesday at a retirement home in Bethesda, Md.

23.   -- Medical researchers will discover that the HIV virus has nothing to do with AIDS.

24.   A disease that confounds medical researchers and now even defies its definition.

25.   A group of medical researchers will try to develop wireless Internet health sensors, based in part on a pill-sized video camera developed recently in Israel.

26.   A medical researcher found hepatitis C could be transmitted on the straight razors commonly used in barbershops to trim sideburns and necks.

27.   Access to the new internet is still strictly limited and its users tend to be astrophysicists, engineers, medical researchers and other specialists.

28.   After graduation, she got a job as a medical researcher and they moved to White Plains, N.Y.

29.   Boroomand, a medical researcher, originally used his CD-ROM drive to play games but is finding nowadays that he uses it more for work.

30.   But a recent government decision has jeopardized these advances, medical researchers say.