Broader Concepts 11 



change the delicately adjusted balance that exists between thousands 

 of components in the cell. 



Growth regulation, therefore, becomes a matter of modifying the 

 balance between components of the cell. It is probably misleading 

 to expect one massive disruptive force such as the blocking of a single 

 enzyme system to regulate rate of flowering, abscission, stem elonga- 

 tion, food conversion, etc. into specific desired channels. Many 

 chemicals with many regulatory efl:ects must operate in cells to keep 

 this balanced system functional. It is our purpose to locate these mul- 

 titudinous natural coordinators of cell functions and gently re-enforce 

 or retard their activities with specifically designed molecules. 



