OXIDATION OF SUBSTANCES OF BIOLOGICAL IMPORTANCE 221 



7.0 



6.0 



5.0 



4.0 



1. Control 



2. X-ray irradiated 

 X-ray irradiated 



reduced with 

 Na.,SoO, 



3.0 



2.0 - 



Fig. 2. Reversible oxidation of ferrocytochrorne c with x-ray irradiation. X-ray 

 dose, 10,000 r. Abscissa: Wavelength in angstrom units; ordinate: specific extincticn 



coefficient X lO^E. 



