ZnSO4 solution (1000x) is a ready-to-use 1000x stock solution formulated for use with our transcription factor (TF) luciferase reporter assays. Simply dilute to 1:1000 in complete growth media and use directly as a pathway-specific positive control. ZnSO4 solution (1000x) has been validated with our cell lines and is suitable for the following pathways: MRF