RADIATION STUDIES ON FUNGI 447 



Table 11-8. P" actors Which May Alter X-ray Effects 



50 



< 



40 - 



O 



o 



V3 



z 



? 30 



2 



z 

 o 

 I- 

 < 



3 



I - 



> 



UJ 



r 37401 



,-89601 



10 20 30 



X- RAY DOSAGE, r X lO' 



40 



Fig. 11-7. Relation between X-ray dosage and frequency of reverse mutations in two 



inositolless mutants (in c //i/ stocks). {Giles, 1951.) 



