A 504bp Crz promoter fragment is fused upstream of sequence encoding a GAL4 driver.
Expression of ScerGAL4Crz.504 is expressed in a group of neurons that the authors call the DM ('Dorsomedial') and DL ('Dorsolateral') neurons in the protocerebrum, and the eight bilaterally symmetric 'vCrz' neurons of the ventral nerve cord.