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  • Microcorrosion casts  (2)
  • Gas gland  (1)
  • Misgurnus fossilis L  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Scanning electron microscopy of microcorrosion casts of the vascular bed in the skin of the spotted salamander, Salamandra salamandra L. (1979)
    Springer
    Cell & tissue research 196 (1979), S. 153-162 
    Details
    ISSN: 1432-0878
    Keywords: Salamander skin ; Skin capillaries ; Poison gland capillaries ; Microcorrosion casts ; Scanning electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Microcorrosion casts of blood vessels in the skin of the spotted salamander, Salamandra salamandra L., were studied using scanning electron microscopy. The investigated vessels include a subepidermal network of respiratory capillaries and the vessels of poison glands. A hypothesis is proposed, according to which both types of vascular beds possess a common origin. Probable factors involved in the differentiation of the primary netword of the subepidermal vessels in larvae are indicated and speculation concerning the supposed mosaic type of circulation in the capillaries of the subepidermal respiratory bed is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236356
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    On the fine structure of the gas gland in some fishes (1969)
    Springer
    Cell & tissue research 102 (1969), S. 333-356 
    Details
    ISSN: 1432-0878
    Keywords: Gas gland ; Fishes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The fine structure of the gas gland cells in Perca and Acerina was studied with the light- and electron microscope. In some of the animals the gas glands were stimulated by the single or repeated removal of the gas from the swimbladder. In this group of fishes the changes in the organization of cytoplasm of the gas gland cells accompanying an intense production of gas have been studied. In the control animals, cells of the gas gland are packed with granules of glycogen except in the perivascular region. A high and protracted activity of the gland results in the disappearance of glycogen, in an increase of the number of cytoplasmic structures, especially the Golgi complex and lysosome-like bodies, and in a very strong proliferation of the external nuclear membrane. The function of the glandular cells and possible causes for the observed alterations in the cytoplasmic organization during an increased gas production are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00335444
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Fine structure of pars neuro-intermedia of the loach, Misgurnus fossilis L. (1970)
    Springer
    Cell & tissue research 105 (1970), S. 259-275 
    Details
    ISSN: 1432-0878
    Keywords: Hypophysis ; Pars Neuro-Intermedia ; Misgurnus fossilis L ; Structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Two types of glandular cells are present in the pars intermedia of the loach, Misgurnus fossilis. Basophils are characterized by the presence in their cytoplasm of numerous secretory granules containing electron-dense and homogeneous material and by scarce endoplasmic reticulum. ‘Weak’ acidophils contain in their cytoplasm abundant endoplasmic reticulum and numerous granules of different electron densities. The distal part of the neurohypophysis is composed of several types of neurosecretory axons, strongly branched pituicytes, numerous capillaries, and connective tissue elements. The axon terminals form the neuroglandular, neurovascular and neurointerstitial contacts. Some axon terminals are closely apposed to the basement membrane separating neurohypophysis from meta-adenohypophysis. At points of absence of continuity of this membrane, some neurosecretory axons become directly contiguous with cytoplasmic membranes of the intermedia cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00335476
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Model of skin vascularization in Rana esculenta L.: Scanning electron microscopy of microcorrosion casts (1978)
    Springer
    Cell & tissue research 191 (1978), S. 539-548 
    Details
    ISSN: 1432-0878
    Keywords: Frog skin ; Respiratory capillaries ; Capillary networks ; Microcorrosion casts ; Scanning electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Microcorrosion casts of blood vessels in the skin of Rana esculenta L. were examined by means of scanning electron microscopy with particular reference to the subepidermal network of respiratory capillaries. Due to the fact that arteries and veins lie in the deeper layers of the stratum spongiosum of the corium, the respiratory vessels form a morphologically homogeneous network. Functionally, however, this network is subdivided into small areas with a centripetal direction of blood flow. The deep capillary net, situated at the base of the stratum compactum of the corium, is not so dense as the respiratory network and does not directly communicate with it. Alveolar glands of the skin have no effect on the distribution of capillaries in the two networks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00219816
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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