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Propoxur (A) resistance in housefly adults is dependant on the strain (susceptible 1 and 2 versus resistant 3 and 4) and reversed by PB (B1) and related to parent metabolism in vivo (B2) and CYP450 metabolism in vitro (C). (TLC radioautogram for [14C]carbonyl(*) label with metabolites involving three sites of oxidation). [27]
