UALH were generated by transfection of osteocarcinoma cancer U2OS cells with the (ARE-RAD9)6-collagenase-Luciferase-SV40-hygromycin plasmid. rnThe plasmid (ARE RAD9)6-Coll-Luc-SVNeo contains a luciferase gene driven by the mouse mammary tumor virus promoter and a neomycin phosphotransferase gene under the control of SV40 promoter. rn