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Fig. S5
Hatching enzyme promoter-based transgene ′tracer′. Stereoscope micrograph shows expression of he1a:YFP ′tracer′ transgene in 1-dpf embryos. This element allows transgenic UAS reporter lines (e.g., Tg(loxP-5xUAS-E1b:gap43-YFP-loxP, he1a:gap43-YFP)gmc830, shown here) to be visually sorted from non-transgenic siblings (asterisks) at embryonic to early larval stages in the absence of Gal4 driver expression. The 365 bp he1a promoter is robustly active (arrow) from 1 to 3 dpf, after which expression rapidly fades. Inclusion of this element in UAS reporter lines has greatly simplified maintenance of our stocks.
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Full text @ BMC Biol.