Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Aplastic Anemia ?
    ### Response:
    Aplastic anemia (a-PLAS-tik uh-NEE-me-uh) is a blood disorder in which the body's bone marrow doesn't make enough new blood cells. Bone marrow is a sponge-like tissue inside the bones. It makes stem cells that develop into red blood cells, white blood cells, and platelets (PLATE-lets).
    