Abstract: Compositions comprising nanoparticles, nanoplexes or virus comprising isolated nucleic acid comprising nucleic acid encoding a mammalian, and methods of using the compositions, are provided.

Abstract: A Descemet Membrane Endothelial Keratoplasty (DMEK) holder for placement within a vial for supporting a corneal tissue inserter is provided. The DMEK holder includes a top and an opposite bottom, at least one support member extending between the top and the bottom, with a bottom portion of the at least one support member sized and shaped to fit against a bottom inner surface of the vial to thereby support the corneal tissue inserter within the vial, and a first annular member having an opening sized and shaped such that a bottom end of the corneal tissue inserter is insertable through the opening and the first annular member separates the corneal tissue inserter from an inner surface of the vial and positions the corneal tissue inserter within the vial away from inner surfaces of the vial to thereby improve retrieval of the corneal tissue inserter by a surgeon.