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Figure 1


Fig. 1. Separate antennal and maxillary fields. (A-D) Exclusive expression domains of Dfd (red) and Cut (green) proteins in eye-antennal discs of (A) an early L2 larva; (B) a late L3 larva; (C) a prepupa; and (D) a pupal head after fusion of two eye-antennal and two labial (lb) discs (maxillary fields marked by arrows in D). (E,F) Clonal restriction established between antennal and maxillary territories in L2 is reflected by clones restricted either to the maxillary field (E;18/33) or to the posterior antennal field (F;12/33). Mitotic clones identified by the absence of GFP (broken lines) were situated relative to the maxillary territory identified by anti-Dfd (red). (G) Schematic representation of the eye-antennal disc, with its eye (grey), antennal (green) and maxillary (red) fields expressing Eyeless, Cut and Deformed proteins, respectively. Antennal discs are oriented with posterior towards the right and dorsal towards the bottom; e, a and mx indicate eye, antenna and maxillary primordia, respectively.





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