Methods for the Microspectroscopic Investigation of Photoreceptive Structures

  • P. A. Benedetti
Part of the NATO ASI Series book series (NSSA, volume 89)


The investigation of functional and distributional properties of cellular structures is often based on extractive procedures, followed by biochemical or spectroscopic assays performed on the materials obtained. The techniques involved in the extraction tend to modify, to some extent, the nature of the components under examination. The drawback is especially marked in the case of photoreceptive organelles which originally contain labile photopigments confined in delicate microstructures. For instance, extraction processes on phototactic protozoa have been attempted with limited results, both due to the. physiological “stress” imposed in the process and to the difficulty in achieving a satisfactory separation of the materials.


Distributional Property Euglena Gracilis Spatial Description Anabaena Variabilis Positional Scanning 
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Copyright information

© Plenum Press, New York 1985

Authors and Affiliations

  • P. A. Benedetti
    • 1
  1. 1.Consiglio Nazionale delle RicercheIstituto di BiofisicaPisaItaly

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