Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) X-linked lymphoproliferative disease ?
    ### Response:
    X-linked lymphoproliferative disease (XLP) is a disorder of the immune system and blood-forming cells that is found almost exclusively in males. More than half of individuals with this disorder experience an exaggerated immune response to the Epstein-Barr virus (EBV).
    