Lung-on-a-chip could replace countless lab rats


By Duncan Graham-Rowe “MICROLUNGS” grown from human tissue might one day help to replace the vast numbers of rats used to check the safety of drugs, cosmetics and other chemicals. The work is part of a growing drive to develop toxicology tests based on human cells as a replacement for animal testing. Such efforts are made partly for ethical concerns, and partly because animal testing is so time-consuming and expensive. For example, the European Union’s REACH regulations require about 30,
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