preimmunization
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preimmunization — pre·im·mu·ni·za·tion .im yə nə zā shən adj existing or occurring in the period before immunization <preimmunization serum> … Medical dictionary
preimmunization — pre·im·mu·ni·za·tion .im yə nə zā shən adj existing or occurring in the period before immunization <preimmunization serum> … Medical dictionary