1.   Not all scientists regard this as a bad thing.

2.   Scientists regard embryonic stem cells as the building blocks of a new era of regenerative medicine, in which the body will someday be used to heal itself.

3.   Scientists regard them as the building blocks of a new era of regenerative medicine, in which the body will be used to heal itself.

4.   Scientists regard frogs as ultra-sensitive indicators of environmental change.

5.   Some other scientists regard these claims as spurious, but more research in this vein is in the works, the believers say.

6.   Some scientists regard him as a serious candidate for the Nobel Prize for medicine.

7.   Some scientists regard the small number of cases among humans as a reason for optimism.

8.   The amphibians, the family of creatures that include frogs and toads, are widely regarded by scientists as excellent indicator species.

9.   Other scientists regarded the announcement with skepticism.

10.   Political scientists regard globalization as responsible for frequent regional wars and massive migrations, as well as for the nuclear proliferation threat and a new vision of geopolitical security.