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1 School of Biology, University of Leeds, LS2 9JT Leeds, UK. Electronic address: r.e.isaac@leeds.ac.uk.
2 President, Invertebrate Neuropeptide Conference/Society, Insect Neuropeptide Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, College Station, TX 77845. Electronic address: ronisi.nachman@yahoo.com.
1 School of Biology, University of Leeds, LS2 9JT Leeds, UK. Electronic address: r.e.isaac@leeds.ac.uk.
2 President, Invertebrate Neuropeptide Conference/Society, Insect Neuropeptide Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, College Station, TX 77845. Electronic address: ronisi.nachman@yahoo.com.