1.   Researchers have noted that such reports appear to be easily biased by social stereotypes and the way in which data is collected.

2.   American researchers noted, though, that similar pathogens created in the past have remained laboratory curiosities that produced no known weapons or harm.

3.   And the researchers note that, with all those old tires around, tire-based activated carbon should be inexpensive.

4.   As researchers note, schizophrenia is a poorly understood illness that has resisted giving up its secrets.

5.   Both these clues are consistent, the researcher noted, with the growth cycle of Trichuris trichiura, an intestinal parasite known to cause anemia, or iron depletion.

6.   But at the same time, researchers note that enforcement may not be the only reason that parasites like the cuckoos are destroying nests.

7.   But researchers note that ancient flowers may also have been much smaller than their modern counterparts to begin with.

8.   But researchers noted that their per-pupil figures reflect regional cost variables, as well as the additional expense needed for poor students and pupils with special needs.

9.   But other researchers noted the preliminary nature of the work.

10.   But researchers note that the effect of Bt corn pollen on populations of wild insects is unknown.