RADIO-PRO'IECriVE ACTION OF CERTAIN' AMINES 



10 



I/) 



> b 

 > 



D 

 I/) 



w 



• X 



10 



■• Controls 

 • X NaCN 



J 



' \r 



20 ^ 30 



Time Days 



o Cystamine 



^ A Cystamine + NaCN 



Figure 1. Effect of pretreatment with cyanide on the protective 



action of cystamine in rats, following 1000 r whole-body X 



irradiation in air 



(0-5 X 10"^ moles for rats, 0*25 x 10~^ moles for mice) are given in Figures 

 3 and 4. For both species of animals, the protective action for both amines is 



Time 



20 2 2 ^0 

 Days 



• — • Controls <^— 



X X 5.OHT + NaCN 



5-OHT 



Figure 2. Effect of pretreatment with cyanide on the protective 

 action of 5-hydroxytr\ptaminr in rats following lOOO r whole- 

 body X irradiation in air 



182 



