These grid box holders were used in vaccine development at the Institute for Protein Design (IPD) at the University of Washington. They contain tiny pieces of copper coated in carbon which enables one to look at proteins under an electron microscope and assure that the development is proceeding as expected. The two head scientists of the project were Alexandra (Lexi) Walls and Brooke Fiala and these grid box holders were used by Fiala. This particular vaccine uses a structure-based vaccine design technique which was developed by the King Lab (named for lead Neil King) at the IPD. It is potentially the first US SARS-COVID vaccine to be developed at an academic institution.