title: Eggshell thinning and DDE.
mesh_terms: D000818:Animals; D001717:Birds; D003633:Dichlorodiphenyl Dichloroethylene / Q000009:adverse effects; D004531:Eggs; D005260:Female; D007306:Insecticides / Q000009:adverse effects*
chemical_list: D007306:Insecticides; D003633:Dichlorodiphenyl Dichloroethylene