SAN DIEGO--(BUSINESS WIRE)--Nanogen, Inc. (Nasdaq:NGEN), developer of advanced diagnostic products, announced today that it has been granted United States Patent No. 7,252,940, titled “Abasic site endonuclease assay” from the U.S. Patent and Trademark Office. The technology described in the patent extends the underlying proprietary real-time PCR technology used in the Company’s MGB Alert® products to a new product offering that has been commercialized as research reagents for use in replication validation following genome wide scanning in pharmaceutical and biotechnology industry labs. This technology is also ideal for genetic analysis in multiplex formats of complex genetic diseases.