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  • 1
    Electronic Resource
    Electronic Resource
    A Comparative Ultrastructural Study on Typical and Modified Sertoli Cells before and after Ligation of the Efferent Ductules in the Rabbit (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 8 (1979), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The aim of this study was to see the effect of ligation of the efferent ductules on the fine structure of typical and modified Sertoli cells in the rabbit. Testes from six control animals and from five operated animals were used in this study. It was found that ligation of the efferent ductules for 48 hours has no immediate effect on the structure of these cells and the cell-to-cell contacts remained unaffected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0264.1979.tb00684.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    On the Histochemistry of the Seminiferous Tubules and their Terminal Segments in the Ram Testis (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 13 (1984), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The purpose of this study is to investigate some histochemical reactions in the lining epithelium of the seminiferous tubules and their terminal segment. The material was taken from adult rams killed in the slaughter house. The results showed clear histochemical differences between the seminiferous tubules and the terminal segment. This fact leads to the speculation that the terminal segment has quite different role from that of the seminiferous tubules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0264.1984.tb00262.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Studies on the testis of the camel (Camelus dromedarius). III. Histochemical observations (1976)
    Springer
    Journal of molecular histology 8 (1976), S. 579-590 
    Details
    ISSN: 1573-6865
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Synopsis The histochemical localization of carbohydrates and lipids and some oxidative, hydrolytic and steroid-linked enzymes has been studied in the testis of the camel with particular reference to the effect of the season on the distribution of these substances. PAS-positive, but diastase-resistant, material was seen mainly in the wall of blood vessels and in the boundary tissues of the seminiferous tubuli recti and rete testis. Clear cyclical changes were seen for glycogen in the lining epithelium of the seminiferous tubules. Glycogen was most abundant in early stages and very scanty or absent in the late stages of the cycle of the seminiferous epithelium. Numerous small lipid droplets were seen in the interstitial cells and towards the lumen of the seminiferous tubules that contain elongate spermatids or spermatozoa. Large lipid droplets were also demonstrable in the basal layer of the seminiferous epithelium and in the cytoplasmic debri. Alkaline phosphatase was demonstrated in the boundary tissues of the seminiferous tubules, tubuli recti and reti testis and in the cells bordering the lumen of the seminiferous tubules. Succinate and lactic dehydrogenases showed similar patterns of distribution in the interstitial elements and intratubularly. Δ5-3α hydroxysteroid dehydrogenase was exclusively demonstrated in the interstitial cells. 17β-hydroxysteroid dehydrogenase could not be demonstrated. The season seems to have no effect on the distribution of all these substances. The possible significance of all these findings is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01003959
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  • 4
    Electronic Resource
    Electronic Resource
    The mammalian tubuli recti: Ultrastructural study (1978)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 192 (1978), S. 1-17 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: The ultrastructure of the tubuli recti was studied in the testes of sexually mature bulls, boars, rams, goats, rabbits and rats fixed by vascular perfusion. The tubuli recti are lined with a simple epithelium that varies in height, from squamous to tall columnar according to the species and the region. The cells are characterized by extensive lateral and tortuous basal plasma membranes and a luminal border with microvilli. Tight junctions and desmosomes are found in the upper half of the lateral borders. The Golgi apparatus is sizable and associated with it are coated vesicles and may smooth vesicles concentrated towards the luminal border. A distal segment of the tubuli recti is found in bulls only and is characterized by a high epithelium which is thrown into folds giving the lumen a festooned appearance. It is suggested that the epithelial cells of the tubuli recti are involved in fluid exchange and in the removal of unwanted spermatozoa.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1091920102
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    Paper (German National Licenses)
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