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. 1990 May;260(3):479-84.
doi: 10.1007/BF00297227.

Immunocytochemical localization of histamine in flatworms

M Wikgren  1 , M Reuter, M K Gustafsson, P Lindroos
Affiliations

Immunocytochemical localization of histamine in flatworms

M Wikgren et al. Cell Tissue Res. 1990 May.

Abstract

Specific antibodies against histamine were used to demonstrate the occurrence and cellular distribution of histamine-like immunoreactivity in three species of flatworms (phylum Platyhelminthes). In the parasitic cestode Diphyllobothrium dendriticum, histamine-reactivity was found in neurons of the main nerve cords, and in cells lining the central and peripheral excretory ducts. In the free-living microturbellarian Microstomum lineare and in the planarian Polycelis nigra, histamine-immunoreactivity was restricted to cells and fibres of the nervous system. The occurrence of histamine or a related substance in the nervous system of flatworms, which represent primary bilateria, indicates the importance of this neuroactive substance in the animal kingdom.

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