RADIATION DEATH IN MAMMALS 



The anatomical location of the cross over 'point' for the 3-5-day effect can 

 be seen from the radiograph of the mouse used as abscissa in Figure 4 A and B. 



Figure 4. Survival time of white mice after partial 

 body irradiation with 8,000 r. Diagram A shows the 

 survival time as a function of the amount of the body 

 shielded with lead. I Caudal region of the body 

 shielded up to point •. // Cranial region of the 

 body shielded up to point o. Diagram B shows the 

 survival time after slit irradiation in relation to 

 the position of the 5 mm slit in regard to the body 



2 3 



Posiiion of fhe s/if relafi\/e to the 

 body (taken as abscissa) 



It corresponds to the region where important organs of the body (liver, 

 spleen, kidney, and a part of the intestine) are located. 



86 



