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  • 1
    ISSN: 1432-041X
    Keywords: Insect egg cortex ; Microsurgical isolation ; Protein electrophoresis ; Maternal RNA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Egg cortex material (ECM) containing the oolemma and adherent periplasm has been isolated from an insect egg by means of micromanipulation. Analysis of proteins by SDS-PAAG-electrophoresis demonstrated striking differences between the protein banding patterns of ECM and of whole eggs. ECM and whole eggs also differ clearly with respect to3H-uridine uptake; the ECM contains RNA labeled during the previtellogenetic period of oogenesis (probably in the germarium) but, in contrast to the central parts of the oocyte, is largely void of label taken up during the last stages of oogenesis.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    BioEssays 13 (1991), S. 343-346 
    ISSN: 0265-9247
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Insect endoparasitoids are able to circumvent the defense reactions of their habitual hosts. In a hymenopteran wasp species, virus-like particles, found on the egg surface are responsible for the protection against the encapsulation reaction of the host caterpillar. Some of the particle proteins are structurally and probably functionally related to host protein(s). Biological properties of some of the host proteins suggest that they might be involved in the insect defense reaction.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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