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  • 1980-1984  (3)
  • 1970-1974  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Extensive regulatory capabilities of a Drosophila imaginal disk blastema (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 744-747 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We used the property that imaginai disk tissue differentiates when transplanted into a metamorphosing larva to determine the fate of particular first leg disk regions (Fig. la,b). The three-quarter lateral plus endknob fragment (3/4L + EK) differentiated sectors A, B, C and D plus the tarsus. This ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/294744a0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The development of animal segments (1980)
    [s.l.] : Nature Publishing Group
    Nature 287 (1980), S. 777-778 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN this issue of Nature Niisslein-Volhard and Wieschaus (see page 795) describe the isolation of mutations at 15 different gene loci that affect the pattern of segmentation in Drosophila. Segmentation is a phenomenon widespread in the animal kingdom; in annelids and arthropods blocks of cells ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/287777a0
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Acquisition of differentiative competence in the imaginai leg discs ofDrosophila (1974)
    Springer
    Development genes and evolution 174 (1974), S. 303-311 
    Details
    ISSN: 1432-041X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary When first leg imaginai discs from early third instar larvae are forced to differentiate immediately by transplantation into larval hosts ready to pupate, they fail to differentiate all the adult leg structures. Even though the variability among these incomplete differentiations is wide, we were able to draw the following conclusions. Even if only little differentiations, limited to a few hairs and bristles, were observed, the structures were always identifiable as the most proximal and the most distal structures of the leg. In those cases where differentiation was more complete the tarsal segments were never completely separated; in extreme cases all five segments were fused. The segments more proximal than the tarsus were always separated when differentiation occurred, but not all the structures within the segments were formed. The absence of a particular structure in an incompletely differentiated segment seems to occur in a random way and is not dependent on its location within the disc.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00579118
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Segmentation of the central nervous system in ligated embryos ofDrosophila melanogaster (1981)
    Springer
    Development genes and evolution 190 (1981), S. 62-64 
    Details
    ISSN: 1432-041X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We have visualized segmentation in theDrosophila embryoniccentral nervous system (CNS) by staining for acetylcholinesterase activity. This technique was used to evaluate the effect of ligation on segments in the ventral CNS. When embryos were ligated prior to cellularization (60 min) fewer segmental ganglia developed in posterior fragments than when embryos were ligated at the blatoderm stage (3 h). This result is consistent with previous ligation experiments in which hypodermal segments were counted (Schubiger and Wood 1977). The number of ganglia scored exceeded the number of hypodermal segments scored especially after ligations at 60 min. Possible explanations for this difference are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00868707
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    Paper (German National Licenses)
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