DDT residues in snakes decline since DDT ban.
D000818:Animals; D003634:DDT / Q000032:analysis*; D005260:Female; D007880:Legislation, Drug; D008297:Male; D010573:Pesticide Residues / Q000032:analysis*; D012911:Snakes / Q000378:metabolism*; D014481:United States
D010573:Pesticide Residues; D003634:DDT