A BillionaireBacked Startup Wants to Grow 'Organ Sacks' to Replace Animal Testing
Mar 23, 2026
R3 Bio has a bold idea for replacing lab animals: genetically-engineered whole organ systems that lack a brain. The long-term goal, says a cofounder, is to make human versions.
https://www.wired.com/story/a-billionaire-backed-startup-wants-to-grow-organ-sacks-to-replace-animal-testing/
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