The following information information accompanied stocks donated to the Bloomington Drosophila Stock Center by Norbert Perrimon and David Doupé, Harvard Medical School.
TI{sfGFP}esgKI (reported as esg-GFP in He et al., 2018, Nature 555(7694): 103--106 <up>FBrf0238268</up>) is a CRISPR-generated knockin of sfGFP (with a stop codon) just before the first ATG of esg. It expresses sfGFP in the esg pattern and results in a loss of function allele of esg.