Contents. List of Contributors. Preface (S.K. Malhotra). Early Appearance of Neuropeptides during Development: Neuromodulatory and Neurotrophic Roles (S. Kentroti and A. Vernadakis). Phosphorylation of Neurofilament Proteins (M.G. Sacher, E.S. Athlan and W.E. Mushynski). Neuronal Development in Embryos of the Mollusk, Helisoma Trivolvis; Multiple Roles of Serotonin (J.I. Goldberg). Opioid Growth Factor and REtinal Morphogenesis (I.S. Zagon, T. Isayama and P.J. McLaughlin). The Molecular Bases of Nerve Regeneration (J. Kelsch Daniloff and L.G. Remsen). Trophic Actions of Gonadal Steroids on Neuronal Functioning Normally and Following Injury (K.A. Kujawa and K.J. Jones). Are Epigenetic Factors Involved in the Normal Expression of Neuronal Phenotypes during Spinal Development (E. Philippe and R. Marchand). Plasticity of Descending Spinal Pathways in Developing Mammals (G.F. Martin, G.T. Ghooray, X.M. Wang and X.M. Xu). Development of the Mammalian Auditory Hindbrain (F.H. Willard). Index.