Protocol for the use of Oredsson universal replacement medium for cell banking and routine culturing of monolayer and suspension cultures.

The Oredsson universal replacement (OUR) medium is the formulation of a universal xeno-free medium designed for the cultivation of human normal and cancer cells in 2D and 3D cultures. Here, we present a protocol for the use of OUR medium for routine culturing, cell banking, and medium modification for suspension culture. We describe steps for thawing, sub-culturing, and freezing cells. We then detail procedures for using these techniques for VERO, A549, THP-1, and Jurkat cells.