1.   The study will test several hypotheses about the relation between perceptual and cognitive skills.

2.   Another clinical study is testing a technique called photodynamic therapy.

3.   Besides testing humor with a panel of professional comedians as judges, the study also tested logic and grammar skills.

4.   But this study directly tested the relationship of health care access to hospitalization rates.

5.   One study will test whether a drug, nevirapine, given once to a mother during labor and to a baby shortly after birth, can prevent such transmission.

6.   Over a three-week period, the study tested daily lead levels in water that was left standing in the faucets.

7.   Spices have been used for centuries to make food safer to eat in hot countries, and other studies have tested the ability of spices to kill bacteria.

8.   The redesigned study tested nevirapine against a short course of AZT.

9.   The study tested a powerful cholesterol-lowering drug that belongs to the class known as statins.

10.   The study tested the interaction between alcohol and a type of estrogen supplement called estradiol, a formulation marketed as Estrace.