ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,773,694, issued on Oct. 27, was assigned to The Regents of the University of California.

"Electrochemical cellular circuits" was invented by Jeff Hasty (Encinitas, Calif.), Muhammad Omar Din (San Diego) and Aida Martin Galan (La Jolla, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein is a method of measuring a cell population, the method including culturing a cell population in a growth medium, wherein the cell population includes a cell strain including a control gene and a promoter sequence; positioning first and second electrodes in contact with the growth medium, wherein the first and second electrodes are connected to differen...