A 8.9kb Gr98b promoter fragment is fused upstream of sequence encoding a GAL4 driver.
Scer\GAL4Gr98b.8.9 is expressed in gustatory neurons of 5 of the bitter-sensitive short labellar taste bristles.
Scer\GAL4Gr98b.8.9 is expressed in some of the short bitter-sensitive sensilla of the labellum.
Gr98bUAS.cSa/Scer\GAL4Gr98b.8.9 rescues Gr98b1
Gr47aUAS.cLa/Scer\GAL4Gr98b.8.9 fails to rescue Gr47a1