1.   But as these countries gradually, if fitfully, merge into the global Market economy, fewer and fewer such barriers exist.

2.   But barriers exist.

3.   But cultural barriers still exist.

4.   Despite heightened awareness and new government initiatives, Lederberg worries that too many barriers exist to developing new antibiotics and other disease-fighting drugs.

5.   Few barriers exist for European exchanges to create competing markets to benchmark U.S. products now traded in Chicago, such the U.S. Treasury bond and Eurodollars.

6.   Not just economic but regional barriers exist, too, Cisneros adds.

7.   Practical barriers exist to boosting Latino voter turnout.

8.   Some people even deny that such a barrier exists.

9.   To make the case that the barrier does not exist, Schmalensee began using an analogy involving competing grocery stores.

10.   Whatever invisible barrier exists between the spectacular and the transcendent, Bryant stepped into another world Wednesday night.