title: Pesticide residue analysis in the presence of polychlorobiphenyls (PCB's).
mesh_terms: D000818:Animals; D001713:Biphenyl Compounds / Q000032:analysis* / Q000302:isolation & purification; D001717:Birds; D002170:Canada; D002713:Chlorine / Q000032:analysis / Q000302:isolation & purification; D002849:Chromatography, Gas; D002852:Chromatography, Ion Exchange
chemical_list: D001713:Biphenyl Compounds; D002713:Chlorine