New research findings about how nerve cells transmit signals are forcing researchers to overhaul their simplistic ideas about the nervous system. Topics highlighted include the multiple role of peptides in the nervous system, receptor molecules, and molecules that form ion channels within membranes. (Author/JN)

Highlights activities and scientific accomplishments at the Medical Research Council Laboratory of Molecular Biology in Cambridge, England. Includes comments by staff scientists about their current research endeavors. (JN)

Discusses the process of aging in the brain, including some of the structural and chemical changes that take place in the nerve cells as they age. (CS)

Discusses various topics and issues related to the scientific enterprise in Cuba. Notes that Cuban science is emphasizing biotechnology and research on the island's chief crop (sugarcane), although hampered by limited personnel and lack of modern laboratory equipment. (JN)

Explains how using computers to generate images, to gather high-speed data, and to make better models has greatly improved x-ray crystallography results. (Author/GA)

Presents viewpoints of scientists and postdoctoral students on issues involving the commercial applications and ventures related to recombinant DNA research. Suggests that how universities deal with issues could impact future school/business relationships as well as the future conduct of basic research. (SK)