Medicine: One More Clue

In the endless search for a criminal substance which can be proved guilty of causing the explosive growth of cancer cells, suspicion has settled on an enzyme, hyaluronidase, already known to be a "spreading factor." Last week a slim, blonde, 24-year-old graduate student at the University of Wyoming announced that she had picked up another jot of evidence against hyaluronidase: it is found in abnormally large amounts of sarcoma (cancer of the connective tissues) in mice —a disease much like human sarcoma.

Mrs. Rosalie Reynolds did the work for her Master of Science degree. It was a hard job, because hyaluronidase...