Proteintech is an antibody manufacturer selling directly to scientists and only selling its own products to maintain the highest level of quality control. With over 2/3 of the human genome completed, we have a catalog of over 12,000 antibodies against 12,000 targets covering a large spectrum of research areas. Visit our website www.ptglab.com to view tens of thousands of publications and in-house validation images in WB, IHC, IF, FC, IP, CHIP, Knock-down siRNA using our antibodies. Other products in the catalog, ELISA kits and proteins, are also manufactured and validated in-house. We have worldwide locations in North America, Europe, Asia offering next-day delivery.