The Respiration of Streptococcus pyogenes and Pneumococcus Type I

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Abstract
The "anti-catalase" theory is untenable. These findings support the theory of Fildes to the extent that sulfanilamide interferes with or blocks a bacterial enzyme system; but sulfanilamide blocks primarily the respiratory enzymes, which in turn inhibit growth, rather than interfering with the synthetic processes necessary for growth as stated by Fildes.