and this is why I've Astin as I wrote you know avoid it like the plague it's a stupid drug it was taken off the market for breast cancer because it was harming more people than it was helping but they still use it for brain cancer and I think it makes still use it do they still use it for colon answer as well I don't know of colon cancer but for certainly for brain cancer so what are you doing you're targeting the blood vessels and then forcing these cells to spread throughout your whole brain