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  • Title: Immunohistochemical localization of serotonin and choline acetyltransferase in sensory neurones of the locust.
    Author: Lutz EM, Tyrer NM.
    Journal: J Comp Neurol; 1988 Jan 15; 267(3):335-42. PubMed ID: 3278018.
    Abstract:
    Sensory neuronal cell bodies in the leg of locust, Schistocerca gregaria, were visualized with antibodies to locust choline acetyltransferase and with antibodies to serotonin by the avidin-biotin peroxidase technique. Two groups of sensory cells react with the antibody to choline acetyltransferase: One group is associated with external mechanoreceptors (i.e., hair-plate hairs and campaniform sensilla) and the other with internal proprioceptors (i.e., chordotonal organs and multiterminal receptors). Sensory cells which react with the antibody to serotonin are associated only with internal proprioceptors being found in both chordotonal organs and multiterminal receptors. In the metathoracic femoral chordotonal organ indirect evidence suggests that some sensory cells are reactive to both antibodies. Some multiterminal receptors react with anti-choline-acetyltransferase, while others react with antiserotonin. These results support the conclusion that most insect sensory neurones are cholinergic but some are serotoninergic.
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