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(A) Expression of the mutant from the en-Gal4 driver results in a dominant negative mutant phenotype. The images are of the dorsal side of the flies showing a deficiency in thorax closure.
(B) Polytene chromosome from ey-Gal4; dRING1 transgenes were stained with Rb-anti antibodies against the FLAG epitope to monitor transgene expression (red) while DNA was counterstained with Hoescht dye (blue).
