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action of hexachlorophene agar plates Authors legend average bacteria per basin bacterial flora bactericidal bactericidal activity bacteriostatic broth containing cent of bacteria chlorophene concentration of bacteria concentration of hexa concentration of hexachlorophene control group control soap death rate constant decreased development of resistance diluting disinfectant drug effect of hexachlorophene Escherichia coli G-ll gms/ml hexachlorophene gram negative gram positive Gram stains Gump hands hexachloro hexachlorophene soap hexachlorophene-containing soap highest concentration increase in resistance increasing concentrations inoculum Ivory soap large numbers liquid soap logarithm low level medium Methods Culture mutant number of bacteria number of colonies numbers of organisms obstetrical ward obtained ordinary soap parent strain phene phenols population Pseudomonas aeruginosa reduce the bacterial replicated resistance in vitro resistant organisms resistant strain resistant to hexachlorophene rinsed serum seven weeks skin flora skin micrococci soap containing Staphylococcus albus Staphylococcus aureus strains resistant subjects surgical scrub ten-fold test soap transfers Traub