Killifish Embryo cComparison (IMAGE)

University of California - Davis

Killifish Embryo cComparison

Caption

A comparison of a normally developed Atlantic killifish embryo, left, and an embryo affected by a group of chemicals called PCBs. The fish on the right has a deformed heart. Killifish that have evolved tolerance to chemical exposure show limited signs of developmental defects.

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Bryan Clark/U.S. EPA

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