Large-scale genotoxicity assessments in the marine environment.

Elevated embryonic abnormalities were observed at only three of the sites, and embryo survival was not affected at any site. Using sea urchin embryos, anaphase aberration rates were higher at all of the stations except San Pablo Bay (2,27). Highly significant elevations in anaphase aberration rates were observed with sedi- ment from Oakland Inner Harbor, north- ern South Bay, off Islais Creek, and Redwood Creek.

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