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  • Articles  (22)
  • Articles: DFG German National Licenses  (22)
  • Analytical Chemistry and Spectroscopy  (13)
  • Immunohistochemistry  (6)
  • Biochemistry and Biotechnology  (3)
  • 1975-1979  (22)
Collection
  • Articles  (22)
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  • Articles: DFG German National Licenses  (22)
Keywords
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  • 1
    Electronic Resource
    Electronic Resource
    Somatostatinergic nerves in the cervical spinal cord of the monkey (1979)
    Springer
    Cell & tissue research 200 (1979), S. 83-90 
    Details
    ISSN: 1432-0878
    Keywords: Spinal cord ; Tupaia ; Somatostatin ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Somatostatinergic nerves in the spinal cord of the monkey were investigated utilizing immunohistochemistry with various antibodies against synthetic somatostatin. In contrast to earlier investigations, it is shown that somatostatinergic nerve endings occur in most of the areas of the grey matter of the spinal cord. The somatostatinergic axons are, however, characteristically distributed in three main regions: (1) Densely-packed endings are seen in lamina II of the substantia gelatinosa, forming a crescent-shaped pattern in the columna dorsalis. Somatostatin immunoreactivity is also seen in lamina I and in the Lissauer tract. (2) A fine network of fibers is observed around the central canal; the endings are concentrated on special cell bodies. Some single perikarya are also stained in this region. (3) A loose network of single fibers is found ending on perikarya of the columna lateralis or ventralis. The perikarya of the nerve axons, with the exception of those terminating in the columna dorsalis, have as yet not been identified. In order to better understand the somatostatinergic system of the spinal cord, these newly-detected somatostatinergic nerves must be studied and their exact pathways analyzed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236889
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  • 2
    Electronic Resource
    Electronic Resource
    Insulin-, glucagon-, and somatostatin-immunoreactive endocrine cells in the equine pancreas (1976)
    Springer
    Cell & tissue research 172 (1976), S. 447-454 
    Details
    ISSN: 1432-0878
    Keywords: Pancreas ; Horse ; Immunohistochemistry ; Insulin ; Glucagon ; Somatostatin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Equine pancreas was investigated with immunohistochemical methods to study the distribution of endocrine cells immunoreactive to antiinsulin, anti-glucagon, and anti-somatostatin. A-cells demonstrable by antiglucagon are located in the center of Langerhans islets and frequently in the duct epithelium. Few A-cells are seen associated to acini. Anti-insulin reactive B-cells form a large zone around the center of the Langerhans islets in which some B-cells lie between exocrine cells and others, although few, are located in the duct epithelium. D-cells stained with anti-somatostatin serum form a discontinuous outermost zone around the Langerhans islets. In some islets the D-cells are also observed among the B-cells or between the border of A- and B-cells. Single D-cells are seen in the duct epithelium or between acinar cells. In younger horses, endocrine cells are more frequently associated in bulges of the duct system. The histotopographic relation between these endocrine cell types is discussed with respect to its functional significance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00220331
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  • 3
    Electronic Resource
    Electronic Resource
    Met-enkephalin-like immunoreactivity in Merkel cells (1979)
    Springer
    Cell & tissue research 201 (1979), S. 343-348 
    Details
    ISSN: 1432-0878
    Keywords: Merkel cell ; Sinus hair follicle ; Rat skin ; Enkephalin ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The Merkel cells from sinus hair follicles of rats were investigated by immunohistochemistry using different antisera against neuropeptides and gastroenteropancreatic (GEP)-hormones. For the first time it has been demonstrated that Merkel cells exhibit an immunoreactivity towards metenkephalin (methionine-enkephalin). The met-enkephalin immunoreactivity was restricted to Merkel cells and was not found in associated nerve axons or terminals. Denervation of Merkel cells did not affect the met-enkephalin immunoreactivity. Antisera against leu-enkephalin (leucine-enkephalin) and other polypeptides did not produce an immunoreaction. The demonstration of met-enkephalin-like immunoreactivity supports the concept that the Merkel cell is a member of the paraneuronal system and a potential neuroreceptor cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236994
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  • 4
    Electronic Resource
    Electronic Resource
    Maintenance of perpetual synchrony in HeLa suspension cultures: Question of unbalanced growth (1975)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 17 (1975), S. 703-712 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Unbalanced growth has been studied in HeLa cell cultures maintained in perpetual division synchrony by periodic inhibition of DNA synthesis. Observation of eight independent cellular parameters indicates that once synchrony has been established the degree of unbalanced growth in later cycles is not as great as is observed with the conventional “double-block” technique. This significant diminution of unbalanced growth appears to be related to the significantly shorter periods of inhibition of DNA synthesis used in the resynchronization process.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260170507
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  • 5
    Electronic Resource
    Electronic Resource
    Human interferon production with diploid fibroblast cells grown on microcarriers (1979)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 21 (1979), S. 433-442 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A variety of diploid human fibroblast lines have been successfully grown to high densities (〉106 cell/ml) on recently developed microcarriers. Interferon induction using poly I·poly C and a superinduction procedure resulted in yields greater than 10,000 units/ml with one cell line. A direct comparison of microcarrier cultures to roller bottle cultures showed equivalent interferon yields on a per cell basis and some apparent differences relating to optimum inducer concentrations and kinetics of interferon accumulation.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260210306
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  • 6
    Electronic Resource
    Electronic Resource
    Behavior of subcellular marker enzymes during the Hela cell cycle (1975)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 17 (1975), S. 695-701 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Six enzymes associated with the activities of the nucleus (thymidine kinase), mitochondria (succinate dehydrogenase), lysosomes (acid phosphatase), peroxisomes (catalase), (cytosol lactate dehydrogenase), and the intermembranal mitochondrial space (alkaline DNase) were assayed at 2 hr intervals over the division cycle of repetitively resynchronized HeLa cells. The results indicated a high degree of reproductibility for cells synchronized by the method of perpetual resynchronization and may be of direct use to those interested in subcellular organellogenesis.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260170506
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  • 7
    Electronic Resource
    Electronic Resource
    Vapor-phase sampling (1979)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 2 (1979), S. 221-224 
    Details
    ISSN: 0935-6304
    Keywords: Gas chromatography ; Capillary ; Vapor-phase sampling ; Sample preparation, extraction by carbon dioxide under high pressure, Freon 12 ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Two new sample preparation procedures that produce solvent-free extracts especially suitable for use with high resolution GC are described. One is based on Soxhlet extraction in a pressurized container that permits the use of liquid carbon dioxide as the extractant; the other utilizes refluxing difluorodichloro-methane (Freon 12) to isolate entrained volatiles from gas streams.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240020505
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  • 8
    Electronic Resource
    Electronic Resource
    Ultrastructural identification of a new cell type — the N-cell as the source of neurotensin in the gut mucosa (1977)
    Springer
    Cell & tissue research 184 (1977), S. 445-452 
    Details
    ISSN: 1432-0878
    Keywords: Tupaia belangeri (Primate) ; Small intestine ; Neurotensin ; Immunohistochemistry ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The neurotensin-cell is identified immunohistochemically and ultrastructurally by differential counting of endocrine cells in the gut of a primate (Tupaia belangen). Utilizing light microscopy, the EC-cells are identified by the Masson-Fontana silver stain; with the same method the neurotensin cells are not stained. The other endocrine cells have been quantified in the small intestine using the peroxidase-antiperoxidase stain with antisera against glucagon, somatostatin, cholecystokinin, gastrin, secretin, pancreatic polypeptide, gastric inhibitory peptide and neurotensin. In the ileal mucosa of Tupaia, the most frequent endocrine cell is the EC-cell followed by the glucagonoid cell, (L-cell). The immunoreactive neurotensin cell represents the third most frequent endocrine cell in this region. On the ultrastructural level, this third most frequent endocrine cell is a heretofore undescribed cell, the N-cell, containing electron dense secretory granules measuring 335±87 nm in diameter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00220968
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  • 9
    Electronic Resource
    Electronic Resource
    Immunohistochemical identification of gastrointestinal neurotensin cells in human embryos (1977)
    Springer
    Cell & tissue research 184 (1977), S. 315-320 
    Details
    ISSN: 1432-0878
    Keywords: GEP-system ; Small intestine ; Human embryo ; Neurotensin ; Development ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The endocrine gastro-entero-pancreatic (GEP) system of 10 human embryos was studied with special reference to neurotensin-immunoreactive cells. These cells are first present in the ileal and jejunal mucosa of 12 to 13 week old embryos. Thereafter the neurotensin-immunoreactive cells are found regularly in these segments of the gut with an increasing number towards the terminal ileum. At about the twentieth week of gestation, the neurotensin cells are detected also in the lower duodenum, i.e. the distribution pattern is more extensive in this age than in younger embryos or in adults.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00219893
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  • 10
    Electronic Resource
    Electronic Resource
    Torsional Raman spectra of ethylamines (1976)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 4 (1976), S. 227-229 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250040303
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