NR ligand binding domain fused to yeast GAL4 TF DBD in the FN26A (BIND) Flexi Vector or use pBIND-Er∝ and pBIND-GR Vectors. Fusion protein NR activates luc2P reporter controlled by 9X GAL4 UAS in pGL4.35. Use pGL4.36 MMTV LTR for androgen or GC responses.