title: Response of different-age mallards to DDT.
mesh_terms: D000375:Aging; D000818:Animals; D001835:Body Weight; D001923:Brain Chemistry; D003634:DDT / Q000494:pharmacology* / Q000633:toxicity; D004372:Ducks / Q000502:physiology*; D005260:Female; D007928:Lethal Dose 50; D008297:Male; D010573:Pesticide Residues / Q000032:analysis; D012044:Regression Analysis; D012737:Sex Factors; D013997:Time Factors
chemical_list: D010573:Pesticide Residues; D003634:DDT