FlyBase curator comment: TI{UAS} represents DNA that contains UAS regulatory sequences and which has been inserted into the genome via any technique (such as homologous recombination or other targeted mutagenesis) that results in the inserted DNA not being flanked by transposable element ends. Other sequences may be present in the inserted DNA and the precise sequence inserted may differ for different insertions of the construct. For details of what is inserted into the genome for an individual insertion of TI{UAS}, see the description in the insertion report and in any allele reports associated with that insertion.