Bergonié-Tribondeau law /ber′gônē″tribôdō″/ [Jean A. Bergonié, French radiologist, 1857–1925; Louis F.A. Tribondeau, French physician, 1872–1918] , a rule stating that the radiosensitivity of a tissue depends on the number of undifferentiated cells in the tissue, their mitotic activity, and the length of time they are actively proliferating.
