<span>Cork cells are plant cells on the outer edge of the trunks/limbs of woody plants. The cell wall is made of suberin, which doesn't let gas or water through. In essence, this helps keep the water in and unwanted things (like pathogens) out.
The inside of the cell is usually empty, but may have a few traces of things depending on species. These cells don't replicate and are generally considered to be dead.</span>
