Describes 16 mutagens/carcinogens found in plant food and coffee as well as several anticarcinogens also found in such food. Speculates on relevant biochemical mechanisms, particularly the role of oxygen radicals and their inhibitors in the fat/cancer relationship, promotion, anticarcinogenesis, and aging. (JN)

Despite the suggested link between cancer deaths and drinking obtained from the Mississippi River, New Orleans still treats its water supply in the same manner as before the Environmental Defense Fund's epidemiological study. (BT)

Presents several research studies which investigate how emotional and psychological factors relate to the risk of getting cancer. The need for bringing psychologists, psychotherapists, biochemists and other specialists in team efforts to investigate psychosomatic aspects of cancer is recommended. (HM)

It is suggested that a system of relative standards be formulated which would compare utility of substances to their relative risk as carcinogens. This would define a range of use restrictions. Substances intended for specific uses would then be regulated according to these standards. (Author/RE)

Discussed are novel ways of blocking gene expression by using antisense RNA. The use of antisense technology in plant development and its possible use in human disease therapy are described. (KR)

Describes the origin, occurrence, and effects of radon gas. Cites studies which attribute 5,000 to 20,000 deaths per year to radon exposure and the synergistic effect between radon and smoking. Explains ways to reduce risks. (RT)

Discusses the growth, development, and unusual parasitic nature of the retrovirus community. Reviews these infectious cancer-causing agents as models for the study of fundamental biological problems, tools for genetic manipulations, and problems posed by their pathogenic potential in humans and animal hosts where they cause diseases such as…

Provides an overview of basic and applied studies for which primates are appropriate subjects. Summarizes the advantages, limitations, and constraints of using nonhuman primates in research. (RT)