Fig. 5. lgl function in the eye imaginal disc. (A,B,D) Anti-Sal staining, which labels a small number of photoreceptors in every differentiated ommatidia. (C) In situ hybridization with a DIG-labeled dpp probe. At late third instar larval stage, lgl mutant eye discs are smaller than in the wild type (compare the respective sizes of the eye disc with the antenna disc in A,B, for example). (D) The differentiation of ommatidia is almost completely restored when lgl is expressed in lgl mutant discs under the control of dpp-Gal4.
