Developmental Brain Research is a special section of Brain Research which provides a medium for prompt publication of in vitro and in vivo developmental studies concerned with the mechanism of neurogenesis, neuron migration, cell death, neuronal differentiation, synaptogenesis, myelination, the establishment of neuron-glia relations and the development of various brain barrier mechanisms.TYPES OF PAPERS 1. Research Reports reporting results of original fundamental research in any branch in the brain sciences. It is expected that these papers will be published about six months after acceptance. 2. Short Communications reporting on research which has progressed to the stage when it is considered that the results should be made known quickly to other workers in the field. The maximum length allowed will be 1500 words or equivalent space in tables and illustrations. It is expected that Short Communications will be published about three months after acceptance. 3. Interactive Reports are papers describing original, high quality, fundamental research in any area of Neuroscience that are considered worthy of priority publication. These will first appear electronically on the Brain Research Interactive website http://www.bres-interactive.com and published soon after in the relevant section of Brain Research. The on-line version may include additional data sets, 3-D/confocal images, animations, etc., and be linked to relevant on-line databases. Comments from readers may be appended later in a linked Discussion Forum at the discretion of an appointed Moderator. 4. Horizons are invited reviews which critically address topical issues, provide new insights into brain mechanisms, highlight areas of controversy and preview future perspectives. Once accepted, Horizons will be published on the Brain Research Interactive website within 2 weeks of acceptance, and in print normally within 10 weeks. Other Review articles, protocols and articles reporting patterns of gene expression will only be published in Brain Research Reviews, Brain Research Protocols and Gene Expression Patterns, respectively.