Evidence that preaxial polydactyly in the Doublefoot mutant is due to ectopic Indian Hedgehog signaling.
Yang Y, Guillot P, Boyd Y, Lyon MF, McMahon AP. Evidence that preaxial polydactyly in the Doublefoot mutant is due to ectopic Indian Hedgehog signaling. Development. 1998 Aug; 125(16):3123-32.