Distribution of DDT-Dehydrochlorinase in Various Tissues of DDT-Resistant House Flies1

Abstract
DDT-dehydrochlorinase activity was determined in various excised tissues of the DDT-resistant housefly on a soluble protein basis. High levels were found in the brain and fat body, intermediate amounts in the cuticle, muscle and hemolymph, and little or none in the ovary and intestinal tract. The amount of water soluble, biuret-positive protein was determined for the above tissues and the significance of these findings with respect to the mechanism of resistance in the housefly is discussed.