Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Bile Duct Cancer ?
    ### Response:
    Your liver makes a digestive juice called bile. Your gallbladder stores it between meals. When you eat, your gallbladder pushes the bile into tubes called bile ducts. They carry the bile to your small intestine. The bile helps break down fat. It also helps the liver get rid of toxins and wastes.
    