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  1. By: Cross, Howard Benjamin,
    Publication info: Baltimore, Md, 1921
    Holding Institution: The Johns Hopkins University Sheridan Libraries
    Subjects: Immunity  Opsonins and opsonic index  
  2. By: Schorer, Edwin Henry,
    Publication info: St. Louis, C.V. Mosby, 1909
    Holding Institution: University of Toronto - Gerstein Science Information Centre
    Subjects: Immunity  Opsonins and opsonic index  Serumtherapy  Vaccination