The 1.4kb bsh short promoter (combined with 2kb bshD and 552bp bshPA fragments) drives expression of GAL4. IVS-Syn21-p10 is also present (a small intron derived from the Mhc gene followed by a synthetic AT-rich 21bp sequence made by combining the Cavener consensus sequence with elements from the Malacosoma neustria nucleopolyhedrovirus (MnNPV) polyhedrin gene, along with the 3' UTR from the Autographa californica nucleopolyhedrovirus (AcNPV) p10 gene).
ScerGAL4bsh.L.PT drives expression in laminar monopolar neuron L5 at 48 hours APF.