702 



ADVENTURES IN RADIOISOTOPE RESEARCH 



Table 6. — ^^p Content of the Free Phosphate in the Blood Plasma and Liver 



(Ii-radiated, dosage 460—7000 r.) 



Eat no. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



27 



28 



29 



30 



31 



32 



33 



34 



Mean value 



% of injected '^p present in 



1 mgm liver P 1 1 mgm plasma P 



0.81 



0.88 



0.79 



1.76 



1.25 



3.15 



0.67 



0.43 



0.37 



4.55 



4.45 



3.90 



1.94 



1.70 



1.77 



3.0 



2.5 



4.7 



3.6 



1.5 



1.1 



1.7 



1.8 



1.7 



1.7 



1.2 



1.8 



1.3 



3.6 



1.9 



0.9 



1.3 



1.7 



1.5 



2.0 



0.94 

 0.91 

 1.51 



2.31 

 2.33 



2.24 



3.50 



3.21 



3.23 



2.5 



2.1 



2.7 



2.7 



1.0 



1.8 



0.6 



1.3 



1.1 



1.7 



1.1 



0.9 



0.7 



1.5 



1.4 



0.9 



1.0 



1.4 



2.1 



1.7 



DISCUSSION OF RESULTS 



The data in Tables 1 to 3 and the summarizing presentation in Table 7 

 show that the formation of new (radioactive) molecules of desoxyribo 

 nucleic acid is in most cases markedly reduced by the action of an X-ray 

 dosage exceeding 450 r. In sarcomas irradiated with less than 450 r 



