Biological Interactions between Wavelengths in the Solar-UV Range: Implications for the Predictive Value of Action Spectra Measurements

  • Rex M. Tyrrell
Part of the NATO Conference Series book series (NATOCS, volume 7)


To understand the biological actions of a variable, complex polychromatic radiation source such as sunlight, fundamental studies with isolated monochromatic radiations are essential. During the past few years, considerable advances have been made in this area, particularly with bacterial systems (for reviews, see Eisenstark, 1971; Webb, 1977; Tyrrell, 1978a; Tyrrell, 1979a). An An important aspect of these studies has been the determination of action spectra for biological parameters of interest (Webb, 1977; Webb and Brown, 1976). In addition to providing clues as to the chromophores involved in a particular biological action, there has also been the hope that such data will be useful in predicting characteristics of polychromatic sources such as effective biological dosage. However, a serious obstacle to integrating action spectra measurements to predict the action of radiation over a wide wavelength range will arise if interactions exist between wavelengths within the region considered.


Alkylating Agent Action Spectrum Visible Radiation Effective Biological Dosage Monochromatic Radiation 
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Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • Rex M. Tyrrell
    • 1
  1. 1.Department of CarcinogenesisSwiss Institute for Experimental Cancer ResearchEpalinges s/LausanneSwitzerland

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