4448 According to the American Cancer Society, non-Hodgkin's lymphoma (NHL) is now the 5 th most common cancer occurring in both men and women in the USA. It is expected that in year 2005 more than 56,000 people in the US will be diagnosed with NHL and more than 19,000 are expected to die from the disease. The etiology of NHL is not completely understood; however, a number of risk factors have been described. For example, herbicide exposure has been suggested to play a role in NHL incidence. Among herbicides, studies