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Will 'Organs-On-A-Microchip' Ever Replace Animal Testing?

Scientists say progress is being made on technological replacements for animals in research and testing.
Flickr photo/Understanding Animal Research (CC BY 2.0)
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Scientists say progress is being made on technological replacements for animals in research and testing.

Marcie Sillman talks with Joanne Zurlo,  senior scientist with the Center for Alternatives to Animal Testing at Johns Hopkins University's Bloomberg School of Public Health, about how far science must go to develop alternatives to using animals in research and testing.