Abstract
Conclusions
1. The protective action induced in rabbits against the lethal effects of Streptococcus hemolyticus infections depends chiefly on the presence of the SO, NH, group, not so much on the free NH, group. 2. Phenyl-alanine-sulfonamide was found to exert a more complete protective action against ordinarily lethal inoculation in rabbits of Streptococcus hemolyticus suspensions than the better known sulfanilamide.
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