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Fig. 5. Enhancer trap transposons within the BX-C. The BX-C is represented
as a multicolored bar, as shown in Fig.
1. Transposon insertions of enhancer trap constructs are indicated
by triangles above or below the bar. Late-stage embryos are stained for
expression of the lacZ reporter gene that is present on each enhancer
trap construct. Embryos have been cut along the dorsal midline and flattened
to make visualization easier. Numbers in brackets show parasegment borders
[adapted from Bender and Hudson (Bender and
Hudson, 2000), apart from the enhancer trap lines expressing
lacZ in PS9 and PS10 (inserted at 125,489 and 113,864, respectively),
which were supplied by D. Fitzgerald and W. Bender].