1.   Amyloidosis occurs when an abnormal protein becomes fibrous and becomes deposited in the heart muscle.

2.   Some proteins become building blocks for structural parts of the cell.

3.   Cech said the new protein becomes the first beneficial reverse transcriptase known in biology.

4.   Some proteins become building blocks for constructing the cell.

5.   The defect, however, causes the protein to become stiff and brittle.

6.   The critical proteins become scarce.

7.   The protein becomes detectable when cancerous tumors exist.

8.   The PSA protein has become a workhorse of urology.