Fig. 6. MAP kinase-Gal4/Vp16 fusion protein drives reporter gene expression in all cell types in the developing larval eye. Eye discs are shown; anterior rightwards, dorsal upwards. (A,B,D) HS:MG driver; (C,E-O) GMR:MG driver. Reporter expression shown green (white in H,K) and other antigen in red (or white in G,J) as indicated. Note that reporter expression in A,B follows downregulation of Atonal; in C, it can be detected in the first seven types of photoreceptor cells (arrowheads); in D, it colocalizes with Elav in a subset of cells; in E, it colocalizes with Elav in many more cells, but from a later time; in F, it colocalizes with Glass (similar to Elav); in G-I, it is detected in late R8 cells together with Sens (two examples indicated by arrows); in J-L, it is detected in some R7 cells together with Pro (two examples indicated by arrows); in M it is detected in some R1 and R6 cells together with BarH1 (two examples indicated by arrowheads); in N, it is detected in strongly in R3 and R4 cells, but later than SalM; and in O, it is detected in some cone cells together with Cut (four examples indicated by arrowheads).

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