'Organs-on-a-Chip'

Researchers are working on a new device to help scientists test drugs more efficiently and that may eliminate the need to test on animals, reports Melinda Wenner Moyer at Scientific American. Developers of a new microchip that simulates the biology of entire organ systems — called "organs on a chip" — say these glass slides coated with human cells are made to mimic a particular tissue or how certain tissues interact with each other, Moyer says.

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