82 



ANTIBIOTIC ACTION OF ANTAGONISTS 



TABLE 9. ANTILUMINESCENT AND ANTIBACTERIAL ACTIVITIES 

 OF VARIOUS ANTIBIOTIC SUBSTANCES 



From Rake, Jones, and McKee (748). 



* Streptococcus pyogenes used as test organism. 



t A tyrothricin-llke preparation. 



tic substances in tissues and their secretions, as by the use of jfluorescent 

 microscopy, penicillin giving a green fluorescence (403). By utilizing 

 the inactivating effect of penicillinase upon penicillin, it was possible to 

 work out a method for the evaluation of different forms of penicillin in 

 blood serum (130). 



Several methods are commonly employed for measuring bactericidal 



