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Fig. 1. Expression of L in the larval eye disc is initiated earlier than
pnr and Iro-C genes. All eye discs in this and subsequent
figures are oriented anterior towards the right and dorsal towards the top.
Eye disc of first- (A,A', arrows), early second- (B,B', arrow),
and late second- (C,C') instar larvae stained for pnr (green),
L (red) and Elav (blue). Expression of pnr (green, arrow) begins in
late first- to early second-instar disc (B,B') in a small group of cells
at the dorsal margin. Expression of L (red) and mirr (green) in
first- (D,D', arrowhead), early second- (E,E') and mid-second-
(F,F') instar eye disc, respectively. mirr is expressed in a
broader domain in the dorsal eye as compared with the pnr. Individual
channels of the images are also shown ('). Magnifications of the images
are same.
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