GenHunter is a biotechnology company founded in 1992 that provides a wide range of technologies, products, and services for life science research. Major technologies and product lines are: - AP-TAG ligand-receptor interaction system [2 U.S. patents], which has revolutionized the way cell surface receptors and ligands are detected and cloned. - Differential display (DD) [3 U.S. patents, 1 Japanese patent], a differential gene expression technology that was invented by the founder of GenHunter in 1992. It has been used in over 4000 publications. - Western blotting: a full line of products for Western blots.