How do termites and cows digest cellulose?

Inside the termites digestive tract, there is a symbotic microorganisms by the name of Trichonympha sphaerica who also has a symbiotic microorganism inside of it that digest the cellulose so that the termite can eat it.

For cows it is the same they have symbiotic microorganisms inside of them that breaks down the cellulose but I am uncertain of the name.