AAR

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Related to Aars: SARS, ARRS

AAR

Abbreviation for antigen-antibody reaction.
References in periodicals archive ?
For this reason, either an extension of the period of limitations or a protective claim AAR must be filed at the partnership level for the partners to benefit from later adjustments to these partnership items.
By integrating these elements, AARS provides a broad and sophisticated reconnaissance capability in one flexible, user-oriented system.