1.   We can use genetic engineering techniques to isolate the gene that is responsible.

2.   Scientists have isolated the gene that causes the disease.

3.   Amgen scientists isolated a gene, then engineered mice that had an overexpressed version of the gene and others that had an underexpressed version.

4.   But when a researcher isolates a gene and determines its genetic sequence, he has done something new, Wight says.

5.   Dr. Ronald and her colleagues set out to isolate the gene.

6.   First you must identify and isolate the gene of interest.

7.   Gelb says he and his co-workers hope to pin down the diagnosis more precisely once they isolate the gene proper.

8.   If they do, he said, this would help researchers isolate the gene quickly.

9.   In the first four years of their work, they have isolated three genes involved in deafness and are closing in on a fourth.

10.   Isolating the gene proper should resolve the question of how often hereditary factors come into play, he said.