The Tet-dnMAML-GFP transgene was designed with a TetOS promoter followed by a cDNA sequence encoding the dnMAML-GFP fusion protein and an SV40 polyA sequence. The TetOS promoter (Tet response element or TRE) contains seven copies of the 42-bp tet operator sequence (tetO) just upstream of a minimal CMV promoter. The dnMAML-GFP cDNA sequence encodes an N-terminal, 62 amino acid (amino acids 13-74), a dominant-negative mutant variant of human Mastermind-like 1 (dnMAML) fused in-frame at its C-terminus to an enhanced green fluorescent protein (EGFP). (J:183913)