ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,712, issued on March 18, was assigned to Organovo Inc. (San Diego).

"Use of engineered liver tissue constructs for modeling liver disorders" was invented by Deborah Lynn Greene Nguyen (San Diego), Dwayne E. Carter (San Diego), Rhiannon Hardwick (San Diego), Alice Chen Walters (San Diego), Sharon C. Presnell (Poway, Calif.), Chirag B. Khatiwala (San Diego) and Rami Nasrallah (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention is directed to three-dimensional, engineered, bioprinted biological tissue constructs exhibiting a liver disorder, methods of making the constructs, and use of the constructs in assays, such as drug testing ...