13 copies of the lexAop site drive expression of the tdTomato fluorescent protein. The tdTomato coding sequence is tagged at the N-terminal end with a myristoylation signal (Tag:Myr(Src64B)). The 3' UTR from the Autographa californica nucleopolyhedrovirus (AcNPV) p10 gene is present downstream of the tdTomato sequences.