When certain melanocyte stem cells are exposed to UV rays, a molecular cascade can trigger melanoma, scientists find in mice.
ROME—Nuclear power is becoming a major political issue here as the country awaits the formation in April of a new coalition government. Last month a newspaper poll indicated that 72 percent of the public would vote to abandon nuclear power entirely, and a referendum will be needed if the Christian Democrats and their partners in the current government cannot agree on a policy. Shortly after the results were published, the government postponed until later this month a widely publicized nati
February 9, 1987