Table 1. Localization of radioactivity in cell fractions of pea stem sections incu- 

 bated overnight with 3 X 10"^^/ 2,4-D (950 juc/millimole, carboxyl-labelled). 



Table 2. Effect of regrinding and washing on C" content of cell wall fraction. 



Table 3. Eflfect of washing in sucrose — EDTA on C'^ content of various precipitate 

 fractions of green sections. 



