Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Diamond-Blackfan anemia ?
    ### Response:
    Diamond-Blackfan anemia is a disorder of the bone marrow. The major function of bone marrow is to produce new blood cells. In Diamond-Blackfan anemia, the bone marrow malfunctions and fails to make enough red blood cells, which carry oxygen to the body's tissues.
    