UAS regulatory sequences drive expression of FHV\B2 which is tagged with Tag:FLAG.
suppressor of variegation, with Scer\GAL4Act5C.PU
Expression of FHV\B2Scer\UAS.T:Zzzz\FLAG under the control of Scer\GAL4Act5C suppresses the position effect variegation of the Sb1 allele that is seen in the T(2;3)SbV chromosome.