ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,474,240, issued on Nov. 18, was assigned to Ventana Medical Systems Inc. (Tucson, Ariz.).

"Stabilized two-part hematoxylin solution utilizing pH adjustment" was invented by Edward E. Durrant (Oro Valley, Ariz.) and Christopher A. Koerber (Tucson, Ariz.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides stabilized hematoxylin formulations having a pH of less than 2.4. In general, the stabilized hematoxylin formulations comprise a solvent, a hematoxylin dye, and an acid. The present disclosure also provides methods of using such stabilized hematoxylin formulations to stain biological samples. The present disclosure also provide...