40 



MUTATIONS 



!3 10"' 



_i 

 1u 

 o 



a 



UJ 



UJ 



ffi 



< 



o 10 



a: 

 o 

 a. 

 o 

 cc 

 a. 



o 



iio-' 



< 



UJ 



q: 



10 



-4 



STAGE 



Figure 11. Isotope dilution curves with (human) 

 anti-A 



Key: curve subject sex age (yrs.) genotype 



* M.S. and L.S. are dizygotic twins. 



have lost Ai in these A1A3 cases probably have a mosaic phenotype 

 equivalent to that in the A3B relatives. I say probably, only because 

 there is some individual variation in loss of Ai. 



Cotterman: Did your AiB parent show a greater than average pro- 

 portion of non-A cells? 



