98 



SCHJEIDE, YAMAZAKI, CLEMENTE, RAGAN AND SIMONS 



X-Ray 



15 

 Days of Age 



20 



Fig. 2. Dry weights of cortexes from control and x-irradiated neonatal rats. 



during the first week after x-irradiation (Fig. 3). 



Figures 4 and 5 show that the amounts of total Hpid per unit dry weight 

 of cortex and cerebeUum increased at the same rates with increasing age 

 despite irradiation. Obviously, both total lipid and phospholipid were re- 

 duced per whole brain in those animals that displayed decreases in brain 



