If you take a perennial out of the ground and deep freeze the plant and roots to preserve it, then......?

Why would I take a plant which comes back every year and deep freeze it? No, it is not possible. They have not frozen humans and brought any back successfully as of yet either. Something will sooner or later break down because we are not supposed to live forever. I would not want to be pickled. You need air, you need water, your heart has to continue beating, and you would have to be hooked up to a respirator. You need oxygen or you would be brain dead.