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      An electron microscope study of the tegument and associated structures of Proteocephalus pollanicoli

      Parasitology
      Cambridge University Press (CUP)

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          Abstract

          The tegument of Proteocephalus pollanicoli is organized at two levels. The external level is a syncytial layer of protoplasm composed of vesicles in a granular matrix. The surface of this level has microvillus-like structure, microtriches, with sharp electron dense tips and less dense bases. Pinocytotic vesicles, large vacuoles, and evaginations occur at the surface of the external level, whereas mitochondria and lipid droplets tend to be concentrated basally. The basal plasma membrane has in some places small invaginations and at others large evaginations forming protoplasmic tubes which connect the external and internal levels.

          The internal level is composed of individual areas of dense, granular protoplasm, each of which has a nucleus. These areas, or cuticular cells, contain lipid droplets, mitochondria, short lengths of agranular endoplasmic reticulum and phospholipid bodies. Two cuticular cells lying close together may be joined by a protoplasmic bridge and thereby form a limited syncytium.

          The morphology of the tegument of this proteocephalid is compared with that of the cyclophyllidean species and the function of the tegument in parasitic helminths is discussed.

          I should like to acknowledge the technical assistance of Mr W. Ferguson and Mr A. Lyness. My thanks are also due to the Wellcome Trust for a grant to purchase the Akashi Transcope and ancillary equipment.

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          Most cited references5

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          ESTERASES IN HYMENOLEPIS AND IN HYDATIGERA.

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            Ultramicroscopic evidence of absorptive function in cestodes

            Rothman (1960)
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              Intestinal Physiology and Host Parasite Relationships

              Read (1955)
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                Author and article information

                Journal
                Parasitology
                Parasitology
                Cambridge University Press (CUP)
                0031-1820
                1469-8161
                August 1965
                April 06 2009
                August 1965
                : 55
                : 3
                : 467-472
                Article
                10.1017/S0031182000069171
                38be852e-a8df-41d2-8eda-f5675276f924
                © 1965

                https://www.cambridge.org/core/terms

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