1.   Researchers have identified the substances which can cause allergies.

2.   Scientists claim to have identified natural substances with cancer-combating properties.

3.   But a police report filed by the arresting officer identified the substance as soap.

4.   But senior investigators identified the substance as RDX, a major ingredient of Semtex, a plastic explosive developed in Czechoslovakia that has become a favorite of terrorist bombers.

5.   But molecular biologists have identified the substance that signals collaterals to form.

6.   Fire Department hazardous materials experts identified the substance as hydrofluoric acid, often used to etch glass.

7.   Tetzlaff declined Thursday to identify the substances sent to the FBI lab in Washington.

8.   The Associated Press identified the substance as androstenedione, a banned nutritional supplement.

9.   The bogus test results render useless data the Army and Air Force need to identify hazardous substances for cleanup at Superfund sites.

10.   The substance was later identified as harmless packing powder.