§4. 



O 



o 

 u 



_c 



c 



'-0 -I 



I- 



a) 





"T 1 <- 



5 



—1 r- 



10 



Specific Activity 



— 1 



13 



a 



i_ 



o 



B-^ 



o 

 u 



c 



c 



s: 



1 - 



c) 



I I ' I 

 1 2 



I ' I 

 3 4 



I I I I I 

 5 6 7 



Temperature 



I I I I I I I 



9 10 11 12 



-" — I — r- 

 10 



—I 

 15 



Specific Activity 



4- 



o - 



o 

 u 



_c 



c 



1'^ 



d) 



A 



^ 



■'A 



^ 



a/ 



/o 



/ 



A 

 A 



/ 



/ 



I I I I I I I I I ' I I I I I ■ I 



4 5 6 7 8 9 10 11 12 



Temperature 



Figure 3. Linear regression of thymidine incorporation plotted against specific activity (a.b)and temperature (c.d). Figs, 3a and 3c show data from ACW's 

 (circles) and AWs (squares), and Figs. 3b and 3d show data from BSHW's (triangle) and BSW's (diamond). Statistics for linear regressions are 

 given in Table 2. 



66 



