41.   The researchers tested each of three chemicals in combination on chickens, the animal usually preferred for studies of pesticide toxicity to nerves.

42.   The researchers are now testing the reaction between mouse and hamster prions in the cell-free culture.

43.   The researchers tested a rice variety grown in tropical climates and one grown in more temperate areas.

44.   The researchers tested dried extract of the fruit of Vitex agnus castus, a tree found widely in southern Europe and western Asia.

45.   Then researchers can test various hypotheses, experimenting with the compound in animal models to see if the drug works against those diseases.

46.   Union Biometrica Inc. has developed a machine that allows researchers to test drug candidates en masse against the tiny creatures.

47.   When researchers tested the lanigerum for its anti-cancer properties, the results were discouraging.

48.   With DNA from blood samples, the researchers tested chromosomes to see if any distinctive pieces of DNA, or genetic markers, were inherited along with the disease.

49.   Other researchers are now testing a new drug that could eradicate the small pockets of HIV viruses that remain stubbornly resistant to the cocktail treatment.

50.   A nicotine solution that can be mixed with drinks has been patented and tested by researchers at Duke University in a small study.