Fig. 8. Clones of btd-expressing cells in eye and wing discs induce activity of developmental markers of antenna and leg discs respectively. (A) The arrow indicates a clone of btd-expressing cells (blue) in the eye field, inducing Dll (red, B) and hth activity (green, C). Other clones scattered in the eye in the same picture also show similar effect. (D) Clone (arrow) of btd-expressing cells (marked by the loss of CD2, see Materials and methods) in the wing disc showing loss vg activity (red, H). (E) Another clone in the wing (arrow, blue) showing gain of hth function (green, I). (F) Clone inducing gain of dac activity (red, J) in the wing. (G) Several btd-expressing clones (some are indicated by arrows) inducing ectopic Dll activity (red, K).

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