USC researchers have found new evidence that heredity can play a role in the development of Hodgkin's disease, a cancer of the lymphatic system that carries water, proteins and electrolytes from tissue fluids into the blood.

In a study of 432 sets of twins in which one sibling developed the disease, Dr. Thomas Mack and his colleagues at the USC School of Medicine found 10 cases in which the other sibling also developed Hodgkin's.