11.   The laboratory began conducting experiments on rats.

12.   The programme then conducted an experiment to answer these criticisms.

13.   The space shuttle crew conducted experiments on plants and cells in a special lab.

14.   Three illumination experiments were conducted with various groups of workers.

15.   Is it really necessary to conduct experiments on animals?

16.   I decided to conduct an experiment.

17.   Conducted an experiment to determine the viscosity of motor oil.

18.   They conducted the experiments with scientific rigor.

19.   A number of psychologists have conducted experiments and have reached some surprising conclusions.

20.   The second finding is important when ethical and legal considerations require the experiments to be conducted under anaesthesia, as was the case in this study.