... TOXICOLOGICAL PROFILE FOR DDT, DDE, and DDD U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES Public Health Service Agency for Toxic Substances and Disease Registry September 2002 1 DDT, DDE, and DDD ... Studies on the Health Effects of DDT and DDT Analogues 215 4-1. Chemical Identity of p,p'- and o,p'-DDT, DDE, and DDD 220 4-2. Physical and Chemical Properties of p,p'- and o,p'-DDT, ... InterferingwiththeMechanismofActionforToxicEffects 195 3.13 ADEQUACY OF THE DATABASE 196 3.13.1 ExistingInformationonHealthEffectsofDDT,DDE,andDDD 196 3.13.2 IdentificationofDataNeeds 199 3.13.3...