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  • Title: Complement receptor 3-like immunoreactivity in the light green cells and the canopy cells of the pond snail, Lymnaea stagnalis.
    Author: Hatakeyama D, Ito I, Kojima S, Fujito Y, Ito E.
    Journal: Brain Res; 2000 May 19; 865(1):102-6. PubMed ID: 10814738.
    Abstract:
    We observed CR3-like immunoreactivity in the central nervous system (CNS) and its surrounding peripheral nerves of the pond snail, Lymnaea stagnalis. In the CNS of L. stagnalis, the immunoreactivity presenting meshwork-like structure was detected in some neurosecretory cells, which are the light green cells (LGCs) and the canopy cells (CCs), both controlling the body growth. The immunoreactivity was also observed along the edges of median lip nerves. The immunoreactive regions in the median lip nerves appeared to form the axonal plates, from which the LGCs and the CCs release molluscan insulin-related peptides (MIPs) into the blood. By contrast, no immunoreactivity was detected in other neurosecretory cells or their release sites, for example the caudodorsal cells and the cerebral commissure, which release ovulation hormones. The present findings, therefore, suggested that CR3 expresses only in the neurosecretory cells releasing MIPs in L. stagnalis.
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