51.   Dutch and Japanese researchers are testing nonpharmacological strategies like bright light therapy and electrostimulation to help alleviate sleep disorders like agitation and restlessness at night.

52.   FEATURE-US-PROSTATE VACCINE, researchers test vaccine for prostate cancer.

53.   FEATURE-US-PROSTATE VACCINE, from PHILADELPHIA, researchers test vaccine for prostate cancer.

54.   Furthermore, researchers have not tested it long enough to be able to prove that it actually helps patients stay healthy longer.

55.   German researchers tested a new anti-depressant sold only in Europe called tianeptine.

56.   He said researchers tested immunogene therapy on mice that were bred without an immune system.

57.   Henriksen said that after the compound was synthesized, the researchers tested it to see if it would put rats to sleep.

58.   In addition, researchers tested only one set of assumptions about future levels of carbon dioxide and sulfate particles, while other assumptions must be investigated, he said.

59.   In their study, the researchers tested the spinal fluid of eight people who had been infected with the virus, four of whom died.

60.   Later, when the rats were grown, the researchers tested their perception of pain by seeing how fast the animals would withdraw from a hot surface.