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1 Department of Pharmacology, The George Washington University School of Medicine, Washington 5, D.C.
Equally cytopathogenic strains of types 1, 2 and 3 poliomyelitis virus were tested to see whether drugs with high inhibitory ratios against type 2 were equally active against all three types of poliomyelitis virus.
Most of the compounds were equal in their effect against type 2 and 3 virus but some were less effective against an equal number of infective doses of type 1 virus.
The compounds with the greatest differences in effectiveness were quinones or compounds capable of yielding a quinone Structure.