748 



ADVENTURES IN RADIOISOTOPE RESEARCH 



Table 5. — Fokmation of Nucleic Acid in Double 

 Sarcomas of Unirradiated Rats 



Table 6. — Average Values for the Formation of Nucleic 



Acid in Irradiated and Unirradiated Double Sarcomas 



(experimental time, 2 hr) 



Liver P . . 

 Plasma . . . 

 Sarcoma P 



For sarcomas which are far apart 



0..55 



0.68 

 0.67 



0.71 

 0.83 



0.89 



In one case, a metal measuring chamber was placed in the centre of 

 the sarcoma in a narcotized rat and the dose received by the lead-shielded 

 sarcoma was measured while the other unprotected sarcoma was irra- 

 diated with 2000 r. The measuring chamber indicated a total dose of 



