Acta Biologica 44. (1993)

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Structural plasticity of an immunocytochemically identified set of honeybee olfactory interneurones. 3. Rybak, 5. Eichmüller ................................................................................ él On the function of histamine in the central nervous system of arthropods. A. Schmid, M. Duncker ........................................................................................................................................ 67 Occurrence and distribution of insulin receptor-like immunoreactivity in moiluscan brains. D. Sonetti, Francesca Bianchi .................................................................................. 77 Biochemical characterization of a serotonergic system in the neural sheath of Helix ganglia. Sz. Juhos, L. Hiripi, K. Elekes ............................................................................ 83 Peptidergic and aminergic centers in the Helix cerebral ganglia: somatotopy and immuno­cytochemistry. L. Hernádi, К. Elekes .................................................................................... 89 Characterization of catch-relaxing peptide (CARP) immunoreactive neurons in tire Helix nervous system. L. Hernádi, Y, Terano, Y. Muneoka, T. Kiss ........................................ 93 Serotonergic input on identified command neurons in Helix. Ágnes Vehovszky, L. Hernádi, К. Elekes, P. Balaban ............................................................................................................ 97 Neuronal mapping studies on the central nervous system of the pulmonate snail Helisoma trivolvis. T. Culver. N.I. Syed, R.L. Ridgway, A.G.M. Bulloch, K. Lukowiak ........ 103 In vitro evidence for multiple neuritogenic factors in the central nervous system of pulmonate molluscs. R.L. Ridgway, N.I, Syed, A.G.M. Bulloch ...................................... 109 In vitro connections between Lymnaea and Helisoma identified interneurons and their follower cells. K. Lukowiak, N.I. Syed, R.L. Ridgway. A.G.M. Bulloch .................... 115 Serotonin in helminths: Content, synthesis, metabolism. Nadicshda B. Terenina ................ 121 Sensory receptors in the head of Stenostomum leucops. II. Localization of catecholamin­­ergic histofluorescence-ultrastructure of surface receptors. Maria Reuter, B. Joffe, Irmeli Palmberg ......................................................................................... 125 Neuropeptides in sensory structures of nematodes. Marianne Wikgren, H.-P. Fagerholm ... 133

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