. "Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a DDT stimulus. DDT, dichlorodiphenyltrichloroethane, is a chlorinated hydrocarbon pesticide moderately toxic to humans and other animals." . . "DDT resistance" . "DDT susceptibility/resistance" . "response to DDT" . . .