In third instar larva: expressed predominantly in photoreceptor cells in eye-antennal disc; also expressed in a small number of cells in the brain.
The reporter construct is expressed only in photoreceptor cells in the developing eye disc.
In the eye disc, reporter geneexpression is found only in the posterior part of the disc where it isrestricted to photoreceptor cells. Expression is also seen in the opticstalk and in Bolwig's nerve.