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It was hypothesized in previous studies that the Exxon Valdez oil spill in Prince William Sound, Alaska, induced heritable mutations and resulted in mortality of pink salmon (Oncorhynchus gorbuscha) embryos. In one of these studies, laboratory exposure of pink salmon embryos to crude oil resulted in apparent mutation-induction in exon 1 and exon 2 of the K-ras oncogene, but no fish from the area impacted...
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