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International Journal of Morphology

On-line version ISSN 0717-9502

Abstract

AMBROSIO, Javier R et al. Scanning Electron Microscopy Observations of the Cross-Section of a Taenia solium Adult Tapeworm. Int. J. Morphol. [online]. 2011, vol.29, n.1, pp.127-132. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022011000100022.

There are no clear morphological evidences of the cytoarchitecture of intestinal adult tapeworms of Taenia solium recovered from infected humans. Parasites could be altered because of the host´s immunological response or by the direct action of drugs used for antihelminthic treatment. Experimental taeniosis in immunosuppressed golden hamsters is a useful way for recovering and studying adult parasites. The purpose of this report is to show images, taken at the ultrastructural level by Scanning Electron Microscopy (SEM), of a cross-sectioned strobilar chain from an adult tapeworm. The parasite was recovered from an experimental infection. Images were taken at several magnifications; they show the brush border tegumental surface, the syncytial tegument, the germinal layer, some cell bodies and the protonephridial system ducts: empty or filled with calcareous corpuscles. Ultrastructural images taken using SEM of T. solium adult parasites, recovered from experimental infections, could be a new way for observing the microscopic anatomy of these parasites and for increasing the knowledge of aspects related to their cellular biology and physiology.

Keywords : Taenia solium; Cestoda; Cysticerci; Tapeworm; Scanning electron microscopy; Microvilli; Tegument; Proglottid; Protonephridial system.

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