ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,455,287, issued on Oct. 28.

"Flow cytometry evaluation for unassociated non-enveloped viral particles" was invented by Katherine D. Shives (Aurora, Colo.), Antje Schickert (Arvada, Colo.), Rebecca K. Montange (Louisville, Colo.) and Jeffrey W. Steaffens (Broomfield, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for flow cytometry evaluation of unassociated non-enveloped viral particles having a non-enveloped viral capsid includes preparing a fluorescently-stained fluid sample in which at least one fluorescent staining step is performed at an acidic pH in an acidic pH range and then subjecting the fluorescently-stained fluid sample to flo...