| contaminants in eggs of colonial waterbirds and hepatic cytochrome p450 enzyme levels in pipped tern embryos, washington state. | eggs of forster's terns (sterna forsteri) collected in 1991 from nesting colonies on crescent island (columbia river) and the potholes reservoir in south central washington generally contained low residues of organochlorine pesticides and metabolites, 2,3,7, 8-tetrachlorodibenzo-p-dioxin, 2,3,7,8-tetrachlorodibenzofuran, and polychlorinated biphenyls (pcbs). hepatic cytochrome p450 enzyme activity in pipped embryos of forster's terns from the two colonies seemed unaffected by contaminants. at cr ... | 1998 | 9732482 |