232 



N. W. Shock 



40 



30 



o 

 o 20 



t^ 10 



• 



• ^^^^. • • • . . • . 



- • • — 



20 



30 



40 50 60 



AGE-YEARS 



70 



Fig. 3. Change in filtration fraction with age. O — 

 values, per cent of plasma filtered. 



(From: Shock, 1952). 



90 



O average 



70 

 ^ 60 



•-OJ 

 CO 3 



^^50 

 0^40 



e 2 



1^30 

 z o 



20 



i^^ 



10 



^ I ^ I I I p 



20 



30 



40 



50 

 AGE-YEARS 



60 



70 



80 



90 



Fig. 4. Change in standard diodrast Tm with age. O- 



•O average 



values mg. diodrast iodine/min./l -73 sq. m. body surface area. 

 (From: Shock, 1952). 



