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adj. That has undergone dedifferentiation

v. Simple past tense and past participle of dedifferentiate.

adj. having experienced or undergone dedifferentiation or the loss of specialization in form or function

"But in the new research, scientists added genes to mature cells that turned back their cellular clocks, or dedifferentiated them, restoring them to an immature, unprogrammed state."

uniform    undifferentiated