Contains a BAC clone encompassing E(spl)mδ-HLH, into which a GFP tag with a GVG linker has been introduced at the N-terminal end of the open reading frame.
E(spl)mδ-HLH reporter is not detected in the notum before 6 hr APF. It is expressed in the dorsocentral cells of the notum and is coexpressed with E(spl)m7-HLH and E(spl)m8-HLH in a subset of cells within proneural stripes.