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  • Title: Immunohistochemical localization of substance P and ACTH-like activity in the central nervous system of the earthworm Lumbricus terrestris L.
    Author: Aros B, Wenger T, Vigh B, Vigh-Teichmann I.
    Journal: Acta Histochem; 1980; 66(2):262-8. PubMed ID: 6158247.
    Abstract:
    The peroxidase-antiperoxidase (PAP) method was used for the immunohistological demonstration of substances P and ACTH in the cerebral and subesophageal ganglia of the earthworm, Lumbricus terrestris L. With rabbit antibody to substance P a positive immunoreaction was found in nerve cells smaller than the type A neurons of the cerebral ganglion. Their perikarya and nerve processes as well as their terminal enlargements in the synaptic zone were immunoreactive. ACTH-like activity was visible in a larger perikaryon type of the A neurons. Their nerve processes did not show any reaction. However, a part of the nerve terminals of the synaptic zone and a few neurons of type B of the cerebral ganglion, further some cells of the subesophageal ganglion reacted positively.
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