1.   Both those companies are testing drugs in the same broad class of substances that are used by British Biotech, called matrix metalloproteinase inhibitors.

2.   A related class of drugs, known as matrix metalloproteinase inhibitors, which disable an enzyme that tumors use to invade surrounding tissues, is also advancing.

3.   Much attention has been focused recently on a group of drugs called matrix metalloproteinase inhibitors, which disable an enzyme that tumors use to invade surrounding tissues.

4.   Padfield told Bloomberg Business News several months ago that the company was seeking alliances to develop research into matrix metalloproteinase inhibitors.

5.   They are already in phase III trials of matrix inhibitors in lung and colorectal cancers, according to the cancer institute.

6.   Together, Chiroscience and Darwin will conduct research into enzymes called matrix metalloproteinase inhibitors that are believed to play a major role in the spread of cancer.