1.   Breeders had to achieve stress tolerance, disease resistance, insect resistance and desired milling quality.

2.   But some scientists say that tolerance may be achieved in the next few years, lessening the need for therapeutic cloning.

3.   Rossini said he is still optimistic that tolerance will be achieved.

4.   So far, the most successful efforts to achieve tolerance have come through bone marrow or related stem cell transplants.

5.   Stem cells themselves may provide new ways of achieving tolerance.

6.   The wood is dried in kilns, and many of the sticks are created underwater by a centerless grinder that can achieve precise tolerances unavailable to traditional knife cutters.