Expression is observed in a subset of R7 cells, and in the axonal projections of those cells.
Expression is observed in R7 cells paired with Rh5-expressing R8 cells.
Expression is observed in around 25 paired R7 and R8 cells along the dorsal anterior margin of the eye, as well as in 30% of other R7 cells. Expression is also observed in an arc of photoreceptor synaptic terminals along the dorsal posterior rim of the medulla neuropil.
Expression is observed in about 30% of R7 cells, as well as in all R7 and R8 cells of the dorsal margin of the eye.