The GMR37G12 enhancer fragment followed by the Drosophila synthetic core promoter (DSCP) is fused upstream of the p65(AD)::Zip+ hemidriver (component of a 'split driver' system, contains the p65 activation domain).
Comment: when combined with P{VT036267-GAL4.DBD.X} (combination referred to as 'P-Fr-GAL4')