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Organization of the eye-antennal disc of Drosophila. (A) SEM image of the Drosophila head. (B) Light microscopic image of the developing eye-antennal disc. ant, antenna; he, head epidermis; mp, maxillary palp. (C,D) Schematics of the developing and antennal adult showing the A1, A2, A3 and aristal segments.
