E(spl)m8-HLH from a BAC is tagged with GFP at the N-terminal end of the open reading frame.
E(spl)m8-HLH is coexpressed with E(spl)mδ-HLH and E(spl)m7-HLH in a subset of cells within proneural stripes. It is detected in proneural stripe cells with low/intermediate levels of ac.