1.   Although depression is known to have some effect on the immune system, Mayne said the study controlled for physiological variables that would account for higher mortality.

2.   Although the group given vitamins and minerals did experience some benefits, increased immune response was not one of them, the study said.

3.   And rather than diminishing over time, the benefits expand, says the study, led by best-selling author and California cardiologist Dean Ornish.

4.   Ballard said earlier studies of sea shells from the area help date the underwater coastline.

5.   About a third go on to have second seizures, the study said.

6.   All of the top recipients of its campaign contributions over the last five years voted against the restrictions, says a study by the Center for Responsive Politics.

7.   But it was not clear, the study said, that crack had driven up either drug trafficking or crime rates in general.

8.   But the fisheries service said new studies involving fish tracked with tiny radio transmitters suggested that there was no significant increase in mortality associated with barging and trucking.

9.   But the small added improvement came at the expense of drowsiness reported by about a quarter of the patients, the study said.

v. + study >>共 521
conduct 10.69%
do 6.49%
complete 4.48%
publish 3.35%
need 2.67%
release 2.40%
fund 2.39%
cite 2.30%
continue 2.21%
begin 2.15%
say 1.74%
say + n. >>共 862
official 10.72%
police 6.88%
spokesman 3.72%
no 3.22%
analyst 2.66%
report 2.47%
source 2.45%
trader 1.74%
goodbye 1.60%
thing 1.27%
study 0.16%
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