Morphological and immunohistochemical study of testicular capsule and peritubular tissue of emu (Dromaius novaehollandiae) and ostrich (Struthio camelus)

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dc.contributor.author Ozegbe, P.C.
dc.contributor.author Aire, Tom A.
dc.contributor.author Madekurozwa, Mary-Catherine
dc.contributor.author Soley, John Thomson
dc.date.accessioned 2009-01-14T10:56:40Z
dc.date.available 2009-01-14T10:56:40Z
dc.date.issued 2008-04
dc.description.abstract The testicular capsule and peritubular boundary tissue of the emu and ostrich, as typical representatives of ratite birds, were studied in sexually mature and active birds. The testicular capsule was much thicker (578.1±73.4 μm for the free surface of the ostrich testis, and 176.2±57.5 μmfor the emu) than those of members of the Galloanserae. The cellular composition of both testicular capsule and peritubular tissue was similar generally to that of members of the previously studied Galloanserae and of mammals. The tunica albuginea of the testicular capsule mainly comprised smooth-musclelike or myoid cells mostly running in one direction and occurring in one main mass. Unlike the Galloanserae, the tunica albuginea contained more collagen fibres than smooth muscle cells, especially in the ostrich. Peritubular tissue was similarly composed of smooth-muscle-like cells distributed in several layers. Actin microfilaments and desmin and vimentin intermediate filaments were variably immunoexpressed in these two tissue types in both birds, with a clear dichotomy in the peritubular tissue. Thus, taken together with studies of some members of the Galloanserae, avian testes clearly contain a morphological mechanism that is represented partly by the smooth muscle cells of the testicular capsule and peritubular tissue for transporting the testicular fluid, which is usually copious in birds, and its cellular content from the testis into the excurrent duct system; thismechanism is similar to that found in mammals. en
dc.description.sponsorship University of Pretoria en
dc.identifier.citation Ozegbe, PC, Aire, TA, Madekurozwa. M-C, & Soley, JT 2008, ‘Morphological and immunohistochemical study of testicular capsule and peritubular tissue of emu (Dromaius novaehollandiae) and ostrich (Struthio camelus)’, Cell & Tissue Research, vol. 332, no. 1, pp. 151-158. [http://www.springerlink.com/content/100524/] en
dc.identifier.issn 0302-766X
dc.identifier.other 10.1007/s00441-007-0515-2
dc.identifier.other 6701816856
dc.identifier.other 6603322006
dc.identifier.other G-9839-2014
dc.identifier.other O-7064-2014
dc.identifier.uri http://hdl.handle.net/2263/8599
dc.language.iso en en
dc.publisher Springer en
dc.rights Springer. The original publication is available at www.springerlink.com. en
dc.subject Testicular capsule en
dc.subject Peritubular tissue en
dc.subject Structure en
dc.subject Intermediate filaments en
dc.subject Immunohistochemistry en
dc.subject Dromaius novaehollandiae en
dc.subject.lcsh Ostriches en
dc.subject.lcsh Ostriches -- Anatomy en
dc.subject.lcsh Emus en
dc.title Morphological and immunohistochemical study of testicular capsule and peritubular tissue of emu (Dromaius novaehollandiae) and ostrich (Struthio camelus) en
dc.type Postprint Article en


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