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  • Electronic Resource  (2)
  • 1985-1989
  • 1970-1974  (2)
  • 1973  (2)
Material
  • Electronic Resource  (2)
Years
  • 1985-1989
  • 1970-1974  (2)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 29 (1973), S. 1301-1302 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Resumen En las preparaciones cromosómicas sometidas a digestion contripsina se observa que la mayor parte de los nucleos celulares muestran una serie de rayos oscuros que parten de la membrana celular y convergen formando un anillo. Esta imagen se hace presente en aquellos preparados que muestran bandas cromosómicas G y no se observa en aquellos casos con déficit o exceso de digestión enzimática. Estos hallazgos probablemente indican que las bandas G se hallan conectadas, ordenadamente, a la membrana nuclear durante la interfase.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Genetica 44 (1973), S. 513-519 
    ISSN: 1573-6857
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: The distribution of heterochromatin in the chromosomes of the rat was determined by analysing two of its properties: late replication and differential stain with the DNA d-r method. The presence of late and non-late replicating c-heterochromatin in the genome of Rattus norvegicus indicates that this chromatin is an heterogeneous substance exhibiting different properties. Furthermore, the existence of heterochromatin formed by nonrepeated sequences or by sequences with a low degree of repetitiveness is suggested by the presence of late replicating areas which do not react with the DNA d-r method.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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