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  • Adenohypophysis  (1)
  • Micropropagation  (1)
  • competitive inhibition  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Cytodifferentiation and immunocharacteristics of adenohypophysial cells in the toad, Bufo melanostictus (1986)
    Springer
    Anatomy and embryology 175 (1986), S. 137-146 
    Details
    ISSN: 1432-0568
    Keywords: Adenohypophysis ; Cytodifferentiation ; Immunohistochemistry ; Toad
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Employing the unlabelled antibody enzyme technique cytodifferentiation, immunocharacteristics and topographical distribution of melanotropic (MSH), adrenocorticotropic (ACTH), thyrotropic (TSH), prolactin (PRL), gonadotropic (GTH) and growth hormone (GH) secreting cells in the embryonic/larval as well as adult pituitary gland of the common Indian toad, Bufo melanostictus, have been studied by using antisera raised in rabbit against mammalian hypophysial hormones. Immunoreactive MSH and ACTH cells appear first in the dorsocaudal and rostral regions of the pituitary anlage (PA) at stage 21 (Gosner's classification) of the embryonic development. This is followed by the differentiation of TSH and PRL cells at stage 22 in the midventral and central regions of the PA respectively. Finally, at stage 23 the GTH cells appear in the fostral and the GH cells in the caudal regions of the PA. With the progress of the development, cells showing immunoreactivity to various antisera gradually increase in number, size, granular content and finally occupy the characteristic adult disposition. The MSH cells comprise the pars intermedia. In the pars distalis (PD) the ACTH cells are localized in the rostroventral region, TSH cells in the central region and the GH cells in the dorsocaudal region. However, GTH and PRL cells are distributed throughout the PD.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00315464
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Propagation of Dalbergia sissoo Roxb. through in vitro shoot proliferation from cotyledonary nodes (1998)
    Springer
    Plant cell reports 18 (1998), S. 122-126 
    Details
    ISSN: 1432-203X
    Keywords: Key words Cotyledonary node ; Micropropagation ; Woody legume
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A protocol is presented for micropropagation of an economically important timber-yielding forest tree, Dalbergia sissoo Roxb. (Sissoo). Multiple shoots were induced from cotyledonary nodes derived from 1-week-old axenic seedlings on Murashige and Skoog's medium containing either N 6-benzyladenine (BA), kinetin (Kn), isopentenyladenine (2iP) or thidiazuron (TDZ), with BA being the most effective growth regulator. High-frequency shoot proliferation (99%) and maximum number of shoots per explant (7.9 shoots) were recorded with BA at an optimum level of 8.9 μM. Concentrations of all cytokinins tested above the optimum level markedly reduced the frequency of shoot proliferation. A proliferating shoot culture was established by repeatedly subculturing the original cotyledonary node on shoot multiplication medium after each harvest of the newly formed shoots. Primary shoots were multiplied as nodal explants, and from each stem node 2 or 3 shoots developed. Thus, 60–70 shoots were obtained in 3 months from a single cotyledonary node. About 91% of the shoots developed roots following transfer to half-strength MS medium containing a combination of 5.7 μM indole-3-acetic acid, 4.9 μM indole-3-butyric acid and 5.3 μM indole-3-propionic acid. Eighty percent of the plantlets were successfully acclimatized and established in soil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002990050543
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Biodegradation of phenol and cresol isomer mixtures by Arthrobacter (1997)
    Springer
    World journal of microbiology and biotechnology 13 (1997), S. 659-663 
    Details
    ISSN: 1573-0972
    Keywords: Arthrobacter ; biodegradation ; competitive inhibition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The Arthrobacter species can degrade phenol, o-cresol and p-cresol much faster (as reflected in high specific growth rates) than other microbes which are reported to degrade toxic compounds. In mixtures, phenol and p-cresol mutually inhibited each other; the inhibition constants show that phenol degradation is strongly inhibited in the presence of p-cresol rather than reverse. o-Cresol enhanced phenol degradation marginally but o-cresol degradation was not affected by the presence of phenol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018518904730
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    Paper (German National Licenses)
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