An intestine-specific CG10116 enhancer fragment is fused upstream of a protein that encodes 10 copies of the Tag:V5 epitope embedded within an inactive, non-fluorescent version of GFP ('smGdP'). The open reading frame is tagged at the C-terminal end with Tag:NLS(tra). The wild-type cbt 3'UTR (656bp) is present downstream of the coding sequence.