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1 From the Department of Pharmacology, Medical-Research Division, Sharp and Dohme, Inc., Glenolden, Pa.
The mode of action of sodium p-aminophenylarsonate (atoxyl) on E. coli appears to be similar to that of sulfonamides, since the same mechanisms of antagonism appear to be involved.
The bacteriostatic and trypanocidal activities of m-amino-p-hydroxyphenylarsenoxide, `Mapharsen,' apparently are exerted through a different mechanism than that which is involved in the bacteriostatic action of sulfonamides.
Submitted on May 15, 1943