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Fluorescent Tadpoles Expose Chemical Contamination
A French biotechnology company has created a transgenic tadpole that fluoresces when it encounters chemical contaminants in water that disrupt thyroid functioning.

Regulators are concerned because growing evidence shows that some synthetic chemicals—including those found in insecticides, herbicides, fumigants, fungicides, detergents, resins and plasticizers—may disrupt the body’s endocrine system, which controls many important functions by emitting hormones, or natural chemical messengers. Chemicals can scramble the signal by mimicking hormones, blocking their receptors or altering hormonal levels.

In cartoons glowing goo signals that there is bad stuff in the water. The tadpoles and fish fry are “little sentinel animals, if you see a signal, it means, gee we’d better take a second look here.”

 
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Invasive Species Reintroduce Toxic Chemicals to Green Bay Food Web - Although , polychlorinated biphenyls, also known as PCBs, have been buried in the sediments, two invasive species – the quagga mussel and round goby – can allow a group of toxic chemicals deposited more than 45 years ago to reenter the food web, passing them to predatory fish and possibly people.


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