11.   But the researchers studied a common Pacific Ocean plankton and found that it can obtain iron by ingesting bacteria.

12.   Company officials have acknowledged that researchers did study the addictive properties of nicotine and how to manipulate the levels of nicotine in cigarettes.

13.   Culture trays containing human embryonic stem cells being studied by researchers at the University of Wisconsin.

14.   EPA researchers studied data from China, Egypt, Canada and the United States.

15.   Few researchers studied the dogs, and few zoos bothered owning any.

16.   Ford researchers abroad are studying it as a lightweight material for radiator grilles and other auto parts.

17.   For years, researchers have studied the idea of using short-term treatment and an emphasis on moderation for problem drinkers.

18.   Green teas were the first ones studied by researchers, which explains why they were publicized before black teas, she added.

19.   Government researchers studied live and dead dial painters and used the data to calculate safe exposure levels for future generations of workers handling radioactive materials.

20.   In addition to any weight loss, researchers will study the long-term effects of the diets on things like insulin levels, bone loss and cholesterol.