A TI{2A-GAL4(1-20)::N-int} cassette has been inserted in-frame into the endogenous CG13321 locus. The presence of the 2A peptide results in the GAL4(1-20)::N-int hemidriver being expressed as a separate protein under the control of endogenous CG13321 regulatory sequences. The TI{2A-GAL4(1-20)::N-int} cassette was inserted via the CRISPR/Cas-9 drop-in technique. The sgRNA sequence used to target the gene was: CCAGCTAGGATGGCTCCTGG.