NEUTRON EFFECTS ON ANIMALS 



105 



in Tables II and III) had a protein content higher than that of the corre- 

 sponding plasma minus the fibrinogen; and 23 (marked with an asterisk in 

 Tables II and III) had a protein concentration equal to or greater than that 

 of the corresponding plasma. Of nine rabbit sera studied in another 

 investigation (8), eight were more concentrated than the corresponding 

 plasma, and the ninth had a concentration greater than that of the cor- 

 responding plasma minus the fibrinogen. On the basis of preliminary 



DESCENDING 



Fig. 2. Tracings of Svensson diagrams obtained by electrophoresis of chicken 

 plasmas in 0.1 X sodium veronal-veronal buffer solution of pH 8.6 for 70 minutes at 

 27 ma. See Table I. 



experiments by Dr. James L. Leitch of this Laboratory, plasma samples 

 prepared from the same lot of chicken blood, when analyzed by the micro- 

 method of Kjeldahl, appear to be not only lower, but also more uniform, in 

 concentration than samples of serum. The results of the present in^•esti- 

 gation will therefore be discussed in terms of the plasma composition. 



In spite of the elevated protein levels of most of the sera, it was possible 

 to superpose the plasma and serum diagrams with the beta globulin and 

 gamma globulin peaks matching, and, by measuring the area between, 



