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Ultrastructural Morphology of the Neuropile of the Cerebral Ganglion of Moniliformis moniliformis (Acanthocephala)

M. Eva Budziakowski and David F. Mettrick
The Journal of Parasitology
Vol. 71, No. 1 (Feb., 1985), pp. 75-85
DOI: 10.2307/3281980
Stable URL: http://www.jstor.org/stable/3281980
Page Count: 11
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Ultrastructural Morphology of the Neuropile of the Cerebral Ganglion of Moniliformis moniliformis (Acanthocephala)
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Abstract

The cerebral ganglion of Moniliformis moniliformis consists of an outer single layer of cell bodies and an inner core of neuropile occupied by cellular processes. Morphological characteristics of 5 types of cellular processes have been described. Most of the processes in the neuropile were of large size, although sites containing numerous small processes (neurites) were also observed. Small processes in the neuropile were the sites of synaptic interaction. The majority of presynaptic membranes were well defined by the presence of electrondense material at the inner leaflet, while postsynaptic membranes appeared to lack marked postsynaptic density. Round or flattened lucent vesicles were concentrated around the presynaptic membranes. Electron-dense and dense-cored vesicles were usually separated from the clear vesicles and situated at some distance from synaptic sites.

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