Reviews.- Neuropeptides: Unity and Diversity, A Molecular Approach.- Isolation Techniques for Insect Neuropeptides.- Insect Neurodevelopment: Gene Cascades in Drosophila.- Modulation and Repair of the Insect Blood-Brain Barrier.- Drug Design.- Insect Neuroendocrinology: Its Past; Its Present; Future Opportunities.- Summaries of Recent Research.- Neurochemistry.- Overview: Progress in Insect Neurochemistry.- Bombyx Eclosion Hormone.- Expression of the Eclosion Hormone Gene in the Brain of Manduca sexta.- Sequencing and Biological Activities of Neuroparsins Isolated from Corpora Cardiaca of Locusta migratoria.- Isolation and Structure of Three Neuropeptides from the Corpora Cardiaca of the American Cockroach.- Isolation, Purification, and Characterization of a Diuretic Peptide(AP/I) from the House Cricket, Acheta domesticus.- Members of the AKH/RPCH-Peptide Family in Coleoptera.- Structures in the AKH Family of Neuropeptides.- Quaternary Structure and Hydrophobic Interactions of Drosophila Acetylcholinesterase in Wild Type Flies and in Several Mutants of the Ace Locus.- Insect Hypertrehalosemic Hormone: Structure-Activity Studies in Periplaneta americana.- Insect Hypertrehalosemic Hormone: Structure-Activity Studies in Blaberus discoidalis.- The Role of Mosquito Oostatic Hormone in the Regulation of Midgut Serine Proteases.- Recent Developments in the Use of HPLC for the Purification of House Fly Oostatic Hormone.- Characterization of Testis Ecdysiotropin(TE) from Brains of Lepidoptera.- Binding of Synthetic Dipteran Neuropeptide Preparations to Head and Abdominal Proteins of 3-Day-Old Face Flies.- Neuropeptide Metabolism: Properties of an Endopeptidase from Heads of Drosophila melanogaster.- Degradation of Dipteran Neuropeptides by Musca autumnalis.- Metabolism of Inositolphosphates in the Cerebral Ganglia of the American Cockroach, Periplaneta americana L..- Tyramine-?-Hydroxylase Activity in the Synganglion of the Cattle Tick Boophilus microplus (Acari: Ixodidae).-l£,