RT Journal Article SR Electronic T1 Diversity and Pattern in the Developing Spinal Cord JF Science JO Science FD American Association for the Advancement of Science SP 1115 OP 1123 DO 10.1126/science.274.5290.1115 VO 274 IS 5290 A1 Tanabe, Yasuto A1 Jessell, Thomas M. YR 1996 UL http://science.sciencemag.org/content/274/5290/1115.abstract AB The generation of distinct neuronal cell types in appropriate numbers and at precise positions underlies the assembly of neural circuits that encode animal behavior. Despite the complexity of the vertebrate central nervous system, advances have been made in defining the principles that control the diversification and patterning of its component cells. A combination of molecular genetic, biochemical, and embryological assays has begun to reveal the identity and mechanism of action of molecules that induce and pattern neural tissue and the role of transcription factors in establishing generic and specific neuronal fates. Some of these advances are discussed here, focusing on the spinal cord as a model system for analyzing the molecular control of central nervous system development in vertebrates.