This affinity purified antibody is directed against the 6X His epitope and is useful in determining its presence in over expressed proteins in various assays. The antibody recognizes the 6X His epitope tag (His-His-His-His-His-His) fused to either the amino- or carboxy- termini of targeted proteins in transfected or transformed cells. This product is prepared by labeling high quality monoclonal mouse anti-6X His IgG (H+L) with our near-IR fluorescent dye CF770. CF770 is one of our three outstanding near-IR CF dyes developed by Biotium. Near-IR CF dyes are superior to other similar near-IR dyes, such as IRDye? 800CW and the DyLight? 800. Near-IR CF dyes have combined advantages in brightness, photostability, specificity and novel features ideal for in vivo imaging, near-IR Western blotting and flow cytometry.