Cancell, also calle Protocel, Sheridan's Formula, Jim's Juice, Crocinic Acid, JS–114, JS–101, 126–F, Cantron, and Entelev, is a liquid that has been promoted as a treatment for a wide range of diseases, including cancer. Originally called Entelev, the formula was developed by biochemist Jim Sheridan. Sheridan sought to target the primarily anaerobic cell respiration of cancer cells (in accordance with the theories of Otto Warburg), claiming to lower cell potential leading to the destruction of cancer cells. It was originally distributed for free.