Is this recycled paper? No, it is made from 100% sustainable and renewable paper fibers, never any post-consumer waste paper that may have inks and dyes. All of our bedding products are also 100% biodegradable and compostable, so you get superior performance along with a product that's good for your pet and good for the planet.
Definition of sustentacular cell. : a supporting epithelial cell (such as a Sertoli cell or a cell of the olfactory epithelium) that lacks a specialized function (such as nerve-impulse conduction) new! Time Traveler
The epithelium continues the pseudostratified characteristics seen in the Olfactory epithelium. It is also ciliated and contains goblet cells. The connective tissue under the epithelium is called the adventitia. In this connective tissue are numerous seromucous (mixed) glands, as well as blood vessels and nerves.