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  • 1990-1994  (4)
  • 1
    Electronic Resource
    Electronic Resource
    Mast cell types in the lymph nodes of the opossum Didelphis albiventris (Marsupialia, Didelphidae) (1992)
    Springer
    Cell & tissue research 268 (1992), S. 571-574 
    Details
    ISSN: 1432-0878
    Keywords: Mast cells ; Connective ; tissue mast cells ; Lymphatic-sinus mast cells ; Lymph nodes ; Opossum, Didelphis albiventris (Marsupialia)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Using histological and histochemical techniques, we have found a unique population of mast cells in the lymphatic sinuses of lymph nodes from different anatomical regions of the opossum. The lymphatic-sinus mast cells of the medullary sinuses were numerous, and could be easily distinguished from the connective-tissue mast cells of the dermis and lymph node capsule by their larger size and their enlarged cytoplasmic granules that were also more heterogeneous in shape and staining properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00319165
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Histochemical and ultrastructural studies of mast cells in the intestinal mucosa and skin of the opossumDidelphis albiventris (1994)
    Springer
    Journal of molecular histology 26 (1994), S. 233-238 
    Details
    ISSN: 1573-6865
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The mast cells located in the intestinal mucosa of a non-eutherian mammal were studied in comparison with those in the skin of the ear. In the intestinal mucosa, the mast cells exhibited a more variable shape, larger cytoplasmic granules and greater sensitivity to fixatives regarding their staining towards Toluidine Blue. Ultrastructurally, these granules were more heterogeneous but lacked the crystalline content found in granules of skin mast cells; lipid body-like organelles were found only in the mucosa-located mast cells. Histochemically, they differed from skin mast cells by the absence of periodic acid-Schiff (PAS)-positive granules. Unlike the mucosal mast cells of the rat, they fluoresced brilliant yellow after berberine treatment, which is evidence of the presence of heparin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02388438
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Noradrenergic and acetylcholinesterase-positive nerve fibres of the uterus in sexually immature and cycling rats (1993)
    Springer
    Journal of molecular histology 25 (1993), S. 213-218 
    Details
    ISSN: 1573-6865
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The distribution and density of the noradrenergic and acetylcholinesterase-positive nerve fibres were histochemically studied in different uterine regions of prepubertal and cycling rats in dioestrus and oestrus. Besides the rich and double innervation of blood vessels, both types of nerve fibre were found in the myometrium and cervical musculature. The non-vascular noradrenergic network looked denser at the tubal end of the horns and at the cervix, whereas the acetylcholinesterase-positive innervation was poor at the tubal end, increasing toward the cervix. Contrasting with the middle third of the uterine horn, at the tubal end, the myometrial longitudinal layer was much more innervated than the circular one, especially by the noradrenergic nerve fibres. The prepubertal rats presented an adult pattern of uterine autonomic innervation. In the cycling animals, this innervation was nearly the same during oestrus and dioestrus regarding both the density of nerve fibres and intensity of the histochemical reactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00163817
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  • 4
    Electronic Resource
    Electronic Resource
    Histochemical and ultrastructural studies of mast cells in the intestinal mucosa and skin of the opossum Didelphis albiventris (1994)
    Springer
    Journal of molecular histology 26 (1994), S. 233-238 
    Details
    ISSN: 1573-6865
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The mast cells located in the intestinal mucosa of a non-eutherian mammal were studied in comparison with those in the skin of the ear. In the intestinal mucosa, the mast cells exhibited a more variable shape, larger cytoplasmic granules and greater sensitivity to fixatives regarding their staining towards Toluidine Blue. Ultrastructurally, these granules were more heterogeneous but lacked the crystalline content found in granules of skin mast cells; lipid body-like organelles were found only in the mucosa-located mast cells. Histochemically, they differed from skin mast cells by the absence of periodic acid-Schiff (PAS)-positive granules. Unlike the mucosal mast cells of the rat, they fluoresced brilliant yellow after berberine treatment, which is evidence of the presence of heparin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00166104
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    Paper (German National Licenses)
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