120 



ACTINOMYCETES AS ANTAGONISTS 



TABLE 19. BACTERIOSTATIC SPECTRUM OF ACTINOMYCIN 



From Waksman and Woodruff (975). 



Note, o indicates no growth; i, trace of growth; 2, fair growth; 3, good growth. 



* If 200 mg. per liter were added the results were usually as follows: for A. aero genes, fair; for 



E. coli (intermediate), trace; for E. coli, no growth. 



hydrate may be left out completely, with only limited reduction in ac- 

 tivity. No growth of the organism is obtained on tryptophane, phenyl 

 alanine, and certain other forms of nitrogen. Good growth may be ob- 

 tained with ammonium sulfate or sodium nitrate, but the production of 



