101.   But researchers are on the brink of developing other drugs, he says.

102.   But researchers are optimistic about even bigger payoffs.

103.   But researchers could never be sure they were seeing such decays.

104.   But the researchers are not yet ready to halt the drug treatment.

105.   But the researchers were really interested in how the subjects were perceiving a pattern of dots moving on one side of the screen.

106.   But the researchers are likely to become millionaires many times over if the patent prevails.

107.   But the woman showed signs of heart disease, and some researchers were disappointed because she was postmenopausal and medically less relevant to younger women.

108.   But the researchers are still not positive if the seals do this using vision or have some other navigational capacity.

109.   But the results vary widely from team to team, and researchers have been slow to do the broader experiments needed to determine the cause of the problems.

110.   But the Kenyan researchers are unsure exactly how their vaccine works.