1-40 



NEUTRON EFFECTS ON ANIMALS 



blood of dog C-1 (4) 6 days after irradiation ceased. These two absorption 

 curves are presented, first, because they are typical of all the curves, includ- 

 ing those for the rabbits, obtained in this study, secondly, because the 

 abnormal plasma protein distribution of this same plasma (as determined 

 by electrophoresis) is shown in Fig. 2c of a previous chapter (4), and 

 thirdl}', because even though the dogs received much more intense neutron 

 irradiation than did any of the rabbits, resulting in marked pathological 

 abnormalities (le), the curves are normal in shape and position of the 

 maxima. 



3200 



2900 2600 



A. PL ASM A 



2300 



4500 ^ 4000 



WAVELENGTH A 



^,- , a HEMOGLOBIN 



350 



3tr5 



Fig. 1. Absorption spectra of plasma and hemoglobin from the blood of a neutron- 

 irradiated dog. 



The absorption curves of all the plasma solutions examined showed 

 single maxima at about 2800 A with minima at about 2540 A, Similarly, 

 the curves for all the laked red blood cells (hemoglobin solutions) showed 



o _ o 



pronounced maxima at about 4140 A and small maxima at about 3450 A. 

 The curves obtained for the blood hemoglobin solutions closely resembled, 

 although they did not exactly duplicate, the curve for Pfanstiehl hemo- 

 globin published by Reinhard (13). 



Wave lengths of the absorption maxima for the plasma and hemoglobin 

 solutions examined are given in Table I. The variation in the wave length 

 of maximum absorption for the plasmas, and the very slight shift to higher 

 than normal values for the plasmas of treated animals, or of irradiated 

 animals (which can be observed on very close examination of Table I) are 



