Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Anemia in Chronic Kidney Disease ?
    ### Response:
    The kidneys are two bean-shaped organs, each about the size of a fist. They are located just below the rib cage, one on each side of the spine. Every day, the kidneys filter about 120 to 150 quarts of blood to produce about 1 to 2 quarts of urine.
                

    