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  • Cell types
  • Fine structure
  • Springer  (39)
  • Cambridge University Press
  • 1980-1984  (4)
  • 1970-1974  (35)
  • 1965-1969
  • 1955-1959
  • 1984  (1)
  • 1982  (3)
  • 1973  (14)
  • 1972  (21)
Collection
Keywords
Publisher
  • Springer  (39)
  • Cambridge University Press
Years
  • 1980-1984  (4)
  • 1970-1974  (35)
  • 1965-1969
  • 1955-1959
Year
  • 11
    Electronic Resource
    Electronic Resource
    Ultrastructure of the chick thymus (1973)
    Springer
    Cell & tissue research 136 (1973), S. 191-205 
    Details
    ISSN: 1432-0878
    Keywords: Thymus ; Fine structure ; Avian ; Gallus domesticus ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The ultrastructure of the normal thymus of the young chicken (Gallus domesticus) is described. Four main cell types, lymphoid cells, epithelial cells, macrophages and myoid cells, can be distinguished. The lymphocytes are more numerous in the cortex than in the medulla, and are quantitatively the most important component of the thymus. The epithelial cells vary greatly in morphology. Reticular epithelial cells, which have long cytoplasmic processes connected by desmosomes, and which appear to afford a supporting network for the free cells of the thymus, are present in the cortex and medulla. Undifferentiated epithelial cells are present in the medulla and cortico-medullary regions and have few intracytoplasmic fibrils or desmosomes. Cystic epithelial cells, showing intercellular and intracellular cyst formation are frequent in the medulla. Also present in the medulla are squamous epithelial cells which contain many intracytoplasmic fibrils and have numerous desmosomes, and which are involved in the formation of Hassall's corpuscles. Macrophages are present in moderate numbers in the cortex and medulla, and immature and fully developed myoid cells are common in the medulla. Other cell types present include granule-containing cells with desmosomes, large pale cells with few cytoplasmic organelles, mast cells, plasma cells, red blood corpuscles and cells of the granular leukocyte series.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00307440
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  • 12
    Electronic Resource
    Electronic Resource
    Die Feinstruktur des Protonephridialsystems von Turbanella cornuta Remane, einem marinen Gastrotrich der Ordnung Macrodasyoidea (1973)
    Springer
    Cell & tissue research 136 (1973), S. 277-289 
    Details
    ISSN: 1432-0878
    Keywords: Protonephridial system ; Turbanella cornuta Remane (Gastrotricha) ; Cyrtocytes ; Fine structure ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Die Protonephridien des marinen Gastrotrichs Turbanella cornuta Remane werden elektronenmikroskopisch untersucht. Die Terminalapparate der Macrodasyoidea sind Cyrtocyten. Ein Reusenröhrchen besteht aus acht Längsstäben mit netzartigen Zwischenwänden aus dünnen Fibrillen. Im Lumen des Röhrchens schwingt eine Geißel. Die Wand eines Terminalbechers bildet ein zusätzliches Reusensystem, das mit Poren und Schlitzen versehen ist. Die drei bis vier Cyrtocyten eines Protonephridiums münden in eine Sammelzelle ein. Von dieser geht ein Exkretionsröhrchen mit Treibwimperflamme aus, welches von einer Ausleitungszelle gebildet wird. Die Cyrtocyten der beiden Gastrotrichenordnungen (Chaetonotoidea u. Macrodasyoidea) grenzen sich strukturell gegenüber bisher bekannten Formen dieses Zelltyps ab.
    Notes: Summary The protonephridial system of the marine gastrotrich Turbanella cornuta Remane was studied with the electron microscope. The terminal cells of the Macrodasyoidea are Cyrtocytes. Each tube for filtration consists of eight longitudinal rods with a net of fine fibrils between them; it contains a single whip. The wall of a terminal cup with its pores and slits is an additional system for filtration. Three or four filtration tubes are ending in a collecting cell. From this cell an excretory channel with one whip formed by an outlet cell arises. The filtration tubes of Macrodasyoidea are similar to those of Chaetonotoidea and differ from other forms of this cell-type.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00307445
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  • 13
    Electronic Resource
    Electronic Resource
    The prolactin cell of the white-crowned sparrow,Zonotrichia leucophrys pugetensis (1973)
    Springer
    Cell & tissue research 138 (1973), S. 455-474 
    Details
    ISSN: 1432-0878
    Keywords: Adenohypophysis ; Bird ; Prolactin cell ; Reproduction ; Fine structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The anterior pituitaries from a series of female White-crowned Sparrows,Zonotrichia leucophrys pugetensis, in the periods of oviposition, incubation, and brooding under natural conditions, have been investigated by electron microscopy. The prolactin cells occur in cephalic lobe and are characterized by large (ca. 300–600 mμ), polymorphic electron-dense secretory granules and an extremely well developed, lamellated endoplasmic reticulum. During incubation and brooding it is only these prolactin cells that are in an activated secretory phase, as indicated by increase in number and size, extremely well developed endoplasmic reticulum, decrease in number of mature secretory granules, and by active formation of granules in the enlarged Golgi apparatus. In the late stages of brooding, and post-breeding, the prolactin cells regress with involution of the endoplasmic reticulum and Golgi apparatus, reaccumulation of granules, and the appearance of lysosomes. The gonadotropes of both the cephalic and caudal lobes undergo progressive morphologic changes through the course of the breeding period. They are numerous and active in the ovulating bird. They undergo gradual regression during the periods of incubation and brooding to become typical “broody” cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00572290
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  • 14
    Electronic Resource
    Electronic Resource
    The outgrowth of rat cerebellum in organized culture (1973)
    Springer
    Cell & tissue research 146 (1973), S. 45-67 
    Details
    ISSN: 1432-0878
    Keywords: Cerebellum (rat) ; Growth in Tissue culture ; Cell types ; Light and electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The outgrowth of newborn rat cerebellum cultivated in the Maximow assembly was studied from the time of explanation until the end of the 1st week “in vitro”. Dynamic characteristics of migrating cells were investigated with time lapse microcinematography and with phase and interference contrast. Three types of cells were identified: bipolar fusiform cells, fibroblasts and macrophages. The ultrastructure of these cells as seen with scanning and transmission electron microscopes is described. Bipolar cells display the same characteristics as those of migrating granule cells “in vivo”. Differentiation of these cells towards neuronal types becomes evident at the end of the first week “in vitro”. Axonal as well as dendritic growth cones were examined, and their ultrastructural characteristics described. Attention is focussed into the abundance of smooth endoplasmic reticulum, which in supposed active growth has the form of thin cisternae, and, at rest or in retraction takes the form of large vesicles. In the latter case, filopodia disappear, and the tips of their processes acquire a bulbous shape.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00306758
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  • 15
    Electronic Resource
    Electronic Resource
    Les glandes exocrines des termites (1972)
    Springer
    Cell & tissue research 130 (1972), S. 205-218 
    Details
    ISSN: 1432-0878
    Keywords: Sternal gland ; Trinervitermes geminatus ; Cell types ; Histochemistry ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Résumé La glande sternale de Trinervitermes geminatus correspond à un épaississement médian de la partie antérieure du cinquième sternite abdominal. Elle est bordée intérieurement par une fine basale conjonctive et extérieurement par la cuticule, quelques sensilles campaniformes sont également visibles dans la masse glandulaire. On peut y reconnaître deux types de cellules: d'abord des cellules ovalaires situées dans la partie moyenne de la glande. Elles contiennent de grosses mitochondries et des globules denses, et sont en relation avec la basale par quelques fins prolongements cellulaires. Ensuite des cellules cylindriques, bien développées, constituant toute l'épaisseur de la glande. Elles possèdent de nombreuses vésicules de reticulum lisse et une bordure en brosse formée de microvillosités et de digitations cytoplasmiques qui pénètrent dans la cuticule. Cette cuticule comprend une mésocuticule lacunaire et une fine épicuticule percée par des «canalicules épicuticulaires». Une comparaison est établie avec la glande sternale d'autres termites, en particulier celle de Kalotermes.
    Notes: Summary The sternal gland of Trinervitermes geminatus appears as a median thickening of the epidermis at the anterior part of the fifth abdominal sternite. It is lined internally with a thin basal lamina and externally with the cuticle. A few campaniform sensilla are also visible in the glandular mass. Two types of cells may be recognized. First, oval-shaped cells, containing numerous large mitochondria and dense globules; these cells having no contact with the cuticle are connected with the basal lamina by a few narrow cytoplasmic stems. Second, tall columnar cells, with vesicular endoplasmic reticulum and an apical brush border built up by microvilli and finger—like processes which reach into the cuticle. This cuticle is made of alveolous mesocuticle and a thin epicuticle perforated by “epicuticular canals”. The organ is compared with the sternal gland of other termites, particularly with the one of Kalotermes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00306958
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  • 16
    Electronic Resource
    Electronic Resource
    Ultrastructure de la glande de la spermathèque chez Phosphuga atrata L. (Coleoptera Silphidae) (1972)
    Springer
    Cell & tissue research 128 (1972), S. 426-437 
    Details
    ISSN: 1432-0878
    Keywords: Spermathecal gland ; Silphidae ; Cell types ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Résumé Chez les Silphes et en particulier chez Phosphuga atrata, la glande de la spermathèque présente une structure particulière liée à la présence d'une intima cuticulaire tapissant la lumière de la glande. Elle comporte trois types cellulaires: les cellules sécrétrices, les cellules de l'épithélium sous-cuticulaire et les cellules-manchons. Les cellules sécrétrices de grande taille contiennent une invagination de la membrane cytoplasmique formant une «vacuole» extracellulaire bordée de microvillosités. Dans cette vacuole plonge l'extrémité, différenciée en ampoule poreuse, d'un canalicule de nature cuticulaire, qui véhicule la sécrétion jusqu'à la lumière de la glande. Le canalicule est élaboré par une cellule-manchon qui l'accompagne sur toute sa longueur sauf à son extrémité intravacuolaire. Ce type de glande, qui se retrouve chez de nombreux Insectes, y assurant des fonctions diverses (sécrétion odorifique, sécrétion de défense, sécrétion spermale, etc.), est susceptible de nombreuses variations.
    Notes: Summary The spermathecal accessory gland in the female of Phosphuga atrata (Silphidae), exhibits a special structure which is due to the presence of a cuticular intima lining the lumen. The wall of the gland shows three cellular types: the secretory cells, the epithelial cells and the ductule carrying cells. Each large secretory cell contains a cavity formed by an invagination of the cytoplasmic membrane and lined by many microvilli. The secretory cell is connected with a cuticular ductule ending in the cavity of the glandular cell, in a porous organelle. This ductule, which carries the secretory material to the lumen, is surrounded by the ductule carrying cell. This type of integumentary gland is very common in insects, where it assumes various functions (attraction, defense, conservation of sperm, etc.) and its morphology varies considerably.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00306980
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  • 17
    Electronic Resource
    Electronic Resource
    Golgi-Cox studies on the central nervous system of a gastropod mollusc (1972)
    Springer
    Cell & tissue research 128 (1972), S. 564-582 
    Details
    ISSN: 1432-0878
    Keywords: Brain ; Pond snail ; Neurons ; Cell types ; Golgi-Cox method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Complete neurones were impregnated in the brain of the pulmonate gastropod pond snail, Lymnaea stagnalis L. using the Golgi-Cox method. Mapping of small to medium sized neurones identified in living preparations by the position of the perikarya was possible. Simple monopolar and bifurcating monopolar neurones with varying lateral patterns of short fine fibres were common in the pond snail brain. Larger neurones have more complex and numerous branches originating from axons close to the perikarya than smaller ones. Stem processes originating on the cell body were observed on neurones above 30 μ in somal diameter. Possible sites for the location of chemical synapses were suggested. Functional types of neurones were difficult to separate on morphological grounds. Giant or very large neurones are small in number in pond snail ganglia, compared with medium or small neurones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00306989
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  • 18
    Electronic Resource
    Electronic Resource
    Unusual yolk platelets in embryos of Xenopus laevis (amphibia) (1972)
    Springer
    Cell & tissue research 129 (1972), S. 320-327 
    Details
    ISSN: 1432-0878
    Keywords: Yolk platelet ; Amphibian embryo ; Fine structure ; Cell organelle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Three heretofore undescribed types of yolk platelets are described from embryos of Xenopus laevis. The first (designated the multiple main-body platelet) is characterized by the occurrence of numerous randomly oriented small main-body crystals embedded in the noncrystalline superficial layer material. The second is characterized by the occurrence of a main-body crystal with an extremely irregular profile. The main-body element of the third platelet type (designated the cavitated main-body platelet) invariably shows little or no evidence of crystalline substructure and contains numerous internal cavities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00307292
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  • 19
    Electronic Resource
    Electronic Resource
    The fine structure of the statocyst of the prosobranch mollusc Pomacea paludosa (1972)
    Springer
    Cell & tissue research 133 (1972), S. 529-537 
    Details
    ISSN: 1432-0878
    Keywords: Statocyst ; Pomacea paludosa ; Ultrastructure ; Cell types ; Ciliary orientation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Ultrastructural observations on the statocysts of the prosobranch gastropod Pomacea paludosa are reported in this paper. 1. The static nerve consists of a great number of naked axons with a diameter of 0.2–0.5 μm. Several axons are joined together to bundles by glia cells (Fig. 1). 2. The epithelium of the statocyst contains 2500–3000 hair (= sense) cells, each with an area of at most 75 μm2 (Fig. 2). This great number of hair cells is compared with the number of receptor cells in other gastropod statocysts. 3. The hair cells are surrounded by smaller supporting cells. The significance of the interlacing of hair and supporting cells and of the possible contact between hair cells is discussed. 4. Supporting cells possess microvilli and sometimes one modified cilium (Fig. 5). The hair cells bear microvilli and 30–40 cilia. These cilia have the typical 9+2 arrangement of the filaments, striated roots to one side of the basal body and a basal foot to the other (Fig. 3). 5. For each sense cell and even for larger areas of the statocyst wall the basal feet point nearly in the same direction (Fig. 4). Hence it is suggested (a) a directional sensitivity for each hair cell and (b) a correlation between the areas of same polarisation and the “groups” of nerve fibers. 6. Different types of vesicles in the nerve layer of the cyst wall (Fig. 6) and stimulation experiments give some evidence for an efferent innervation of the statocysts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00307133
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  • 20
    Electronic Resource
    Electronic Resource
    Die Feinstruktur der Gallenblase und der Gallengänge (1972)
    Springer
    Cell & tissue research 135 (1972), S. 87-102 
    Details
    ISSN: 1432-0878
    Keywords: Gall bladder (Mouse) ; Epithelium ; Cell types ; Artifacts ; Light- and electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Die Feinstruktur des Epithels der Gallenblase der Maus wurde nach Fixation in vier verschiedenen Lösungen (OsO4 nach Palade, OsO4 nach Millonig, Glutaraldehyd und OsO4, Glutaraldehyd-Formaldehyd und OsO4) untersucht. Folgende Zellen sind unabhängig von der Fixierung erkennbar: 1. Hauptzellen, 2. Bürstenzellen, 3. Wanderzellen, 4. basalgekörnte Zellen. Die „hellen“ und „dunklen“ Hauptzellen sind jedoch als Fixationsartefakte zu betrachten. Die Erneuerung des Epithels und die funktionelle Bedeutung der vier verschiedenen Zelltypen werden diskutiert.
    Notes: Summary The fine structure of the gall bladder epithelium (mouse) has been investigated after fixation in four different solutions (OsO4-Palade, OsO4-Millonig, Glutaraldehyde and OsO4, Glutaraldehyde Formaldehyde and OsO4). Independent from fixation applied the following cells can be identified: 1. principal cells, 2. brush cells, 3. migrating cells, 4. granulated cells. The results show however that the “clear” and “dark” principal cells are to be considered as fixation artifacts. The renewal of the epithelium and the possible functions of the four cell types described are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00307090
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