1.   Doctors believe the majority of cancer tumours grow to a certain stage before their cell walls rupture and release enzymes.

2.   Next, they are twisted so natural enzymes are released and the leaves oxidize.

3.   Once this damage occurs, the cell nucleus releases repair enzymes that snip out the damaged DNA fragments, Dr. Gilchrest said.

4.   Once a sperm binds to an egg, the egg releases an enzyme that alters its surface, preventing other sperm from attaching.

5.   The corks release enzymes that help tenderize the meat and reduce the cooking time by half.

6.   When the key and lock do fit, it triggers the sperm to release enzymes that dissolve the zona in that one spot.

7.   In earlier research, however, Shay and others found that some cancer cells and reproductive cells release an enzyme called telomerase that keeps the telomere from shortening.

8.   This causes the sperm to release enzymes that drill through the egg covering.